O método potenciométrico na determinação do H+ trocável em solos

For the determination of exchangeable hydrogen ion in soils, the authors of the presente work made the extraction with normal calcium acetate solution that may have an initial pH between 7 and 8 without altering the amount of hydrogen ion extracted. The extraction was made by shaking 5,0 grams of air dry soil with 100 ml of normal calcium acetate solution, the pH of wich was ascertained to 7,0, 7,5 and 8,0 with acetic acid, in 250 mil conical flasks for 30 minutes in a Wagner shaker (30-40 rpm). The contents of the flasks were then, filtered. A 50 ml aliquot of each of the leachate was titrated with a 0,020 N NaOH solution and the volumes consumed sodium hydroxide were ploted against pH. The titration curves thus obtained showed to be straight lines between pH 8 and 9 and parallel to the curve obtained by the titration of the blank. Two ways of locating the end point of the titration showed to be possible: the use of a pHmeter or titrimeter or the use of phenolphtalein as indicator. When using a pH meter or a titrimeter, the end point may rest in any point between pH 8 and 9, and the volume of sodium hydroxide consumed is found by comparison with a similar curve obtained by the titration of the blank. When using phenolphtalein the calcium acetate solution must have a pH below 8.

Novo gênero de nematóide do solo da família Actinolaimidae

Caryboca paranaensis n.g., n.sp. (Nemata, Actinolaimidae) was found inhabiting soil around coffee roots sent in from Cornélio Procópio, State of Paraná, Brazil. Definition of the new genus: Actinolaimidae, Actinolaiminae. Lip region distinctly offset by a constriction and showing a cuticularized basket-like structure provided with lateral denticles and two rather strong teeth pointing forwards. Cuticular rod-like thickenings extending back from the basket-like structure to the guiding-ring. Anterior part of oesophagus a non-muscular, narrow tube; posterior part wider and provided with strongly developed radial musculature. Gonads paired and reflexed. Tail attenuated, pointed. Males and food habits unknown. Caryboca n.g. differs from Actinolaimus Cobb, 1913, by having a labial basket-like structure as well as by the non-muscular nature of the anterior part of oesophagus. Caryboca n.g. differs from Carcharolaimus Thome, 1939, by having two strong pharingeal teeth and pointed tail.

A new species of Stratiodrilus (Polychaeta, Histriobdellidae) from freshwater crayfishes of southern Brazil

A new species of polychaete, Stratiodrilus vilae, epizoic on Parastacus brasiliensis (von Martens, 1869) and P. defossus Faxon, 1898, is described from the State of Rio Grande do Sul, southern Brazil. The new species has one pair of long, anal, conical ventral lobes, one on each side of the anus, claspers in the males, and one pair of tubercles in each of the posterior locomotor appendages; and the jaw apparatus not reaching the limit between the head and the first segment.

A new species of Ibitermes (Isoptera, Termitidae) from the Atlantic forest, northeastern Brazil

The sterile castes of Ibitermes inflatus sp. nov. from Rio Tinto, State of Paraíba, Brazil are described and illustrated. This is the first record of a species of Ibitermes from the Brazilian northeast and from the Atlantic Forest biome. The absence of ridges in the molar plate of the left mandible and the presence of granules of sand and silt mixed with organic matter in advanced stage of decomposition in the digestive tube of workers suggest that the species is a typical humus feeding termite.

Flutuação de Diptera em granja avícola, Pelotas, Rio Grande do Sul, Brasil

In order to investigate the population fluctuation of Diptera in a poultry house in Pelotas, Rio Grande do Sul, Brazil, six collection methods were utilized: 1 (0 to 7 day-old feces from chickens), 2 (7 to 14 day-old feces), 3 (14 to 21 day-old feces), 4 (0 to 21 day-old feces), 5 (accumulated feces) and 6 (tube trap). Analyses of polynomial regression were accomplished independent of the collection method. The survey was conducted from August 1998 to July 1999 in chicken houses at the Conjunto Agrotécnico Visconde da Graça. A total of 28,720 Diptera were collected, including the following species: Coproica sp. and Telomerina flavipes (Meigen, 1830) (15,640); Drosophila repleta Wollaston, 1858 (9,229); Dohrniphora cornuta (Bigot, 1857) (2,539); Ischiolepta scabricula (Haliday, 1833) (544); Lestodiplosis sp. (320); Muscina stabulans (Fallen, 1817) (159); Musca domestica L., 1758 (143); Drosophila melanogaster Meigen, 1830 (95); Telmatoscopus albipunctatus Williston, 1893 (21); Rhegmoclema sp. (14); Fannia canicularis (L., 1761) (7); Stomoxys calcitrans (L., 1758) (2); and unidentified species of Psychodidae (6) and Muscidae (1). The greatest number of species occurred in October, November and December and the fewest in August, September and April. The greatest abundance of Diptera was recorded in October (9,092), while the lowest index of capture was noted in April (658). The population fluctuation was estimated for Coproica sp. and T. flavipes, D. repleta, D. cornuta, I. scabricula and Lestodiplosis sp.

The tadpole of Hypsiboas atlanticus (Anura, Hylidae) from northeastern Brazil

The tadpole of Hypsiboas atlanticus (Caramaschi & Velosa, 1996) is described from the municipality of Maceió, State of Alagoas, Brazil. At stage 36 the larvae have an overall elliptical body in lateral and dorsal views, oral disc anteroventral, spiracular tube sinistral, and labial tooth row formula 2(1,2)/3(1). The oral disc is surrounded, almost completely (anterior medial gap present) by a single row of marginal papillae. Described tadpoles of the H. punctatus species group can be differentiated by a combined disc oral features. Additional descriptions of H. punctatus (Schneider, 1799) tadpoles from populations throughout South America may be helpful in determining the status of these populations.

Buccal apparatus and gastrointestinal tract dimensions associated to the diet of early life stages of Centropomus undecimalis (Centropomidae, Actinopterygii)

The present study aims to compare the buccal apparatus and gastrointestinal tract of early life stages of Centropomus undecimalis (Bloch, 1792), and relate them to its diet. A total of 190 individuals collected with a channel net in the Catuama estuary (07º40'9.9''S, 34º50'36.7''W), northern coast of the state of Pernambuco, were examined. Morphometrical and meristic data were analyzed for the two initial developmental periods (larval and juvenile). Their digestive tube was morphologically characterized and its content identified. The longest transverse axis of food items was measured, and compared to the standard length (SL) and mouth gape size (D) of the individuals. Body measurement regressions differed significantly (p<0.001) between larvae and juveniles. The stomachs with food content (n=118 individuals) presented a proportion of 62% full and 30% empty (being 8% damaged). They differed in relation to the fullness level and presented a coiled shape when empty. The number of food items in relation to SL and D did not present an evident correlation. Larvae (SL<10 mm) feed on small copepods, while juveniles (SL=11.1 to 64.7 mm) ingest larvae of various decapod species, showing a distinct diet between these initial developmental stages.

New species of Cyclodontina from Bahia, Brazil (Gastropoda, Pulmonata, Odontostomidae)

A new species of pulmonate snail was recently collected in a small forest fragment in the city of Bom Jesus da Lapa, Bahia state, Brazil. Bahia is known for a high diversity of land snails and Bom Jesus da Lapa is an interesting locality, since it is close to the interface between two major Brazilian biomes: Cerrado and Caatinga. The new species is described as Cyclodontina tapuia sp. nov. and can be easily identified by its brown shell, conical spire, convex whorls, a sculpture comprised of strong ribs, and an aperture with four barriers: a median parietal tooth, a median palatal tooth, a median basal tooth and a strong columellar lamella. This discovery is also a reminder of how little the Brazilian continental molluscan fauna is known and of the urgency in studying and preserving the rich (though usually overlooked) fauna of the Caatinga.

Pesquizas sobre a acção physiologica das toxinas bacterianas: II - sobre os efeitos dos filtrados de culturas antigas de bacillo coli administrados por via digestiva a coelhos

This paper deals with experiments of propination of small doses of filtrates of old cultures of colon bacilli to normal rabbits by stomach tube. The experiments have demonstrate that the propination of the filtrates produces a decrease of weight in the animals in experience. The loss of weight just after the first propination of the filtrate to the rabbit and continues progressively leading to emaciation and death if new doses are given. If the propination was too much prolonged the animals goes to death, notwithstanding the propination of the filtrates being discontinued.

Biologia do saguirú (Characidae, Curimatinae)

In Brazil all the fishes belonging to the sub-family Curimatinae are called « saguirú ». The present work gives a biological study of the Curimatus elegans Steind., a small fish without any economical importance, which is to be found along the whole brazilian coast, down till Paraguay. The specimens utilized for the present study come from Fortaleza (Ceará, north-eastern Brazil). The C. elegans is « ilyophagus », that means, it feeds itself exclusively with those organic materials to be found in mud, specially with microscopical algae. The intestines are very extent, some of them measuring about 9 to 11 times body's length. Studies have been made about growth and age of the C. elegans; the biggest sizes found were of 153 mm. for females and 88 mm. for males. The C. elegans shows developed sexual glands during a long period (April to September). The movements of the spermatozoa, in contact with water is of 40 to 50 seconds of intense movements, ceasing after 70 to 100 seconds. In contact with 0.5% NaCl-solution spermatozoa show a big increase in movements-time, that can last till about 25 minutes. The eggs' diameter measures 0.70 to 0.73 mm., mature and hydrated it attains 0.93 to 1,00 mm. There is a certain correlation between the size of the body and the quantity of eggs. Big specimens can produce a total of 200.000 eggs. The average quantity contained in 1 gr. and 1 cc. is 6018 and 6229 eggs, respectively. Maturity and spawning in laboratory has been obtained due to injections of suspension of fish-hypophysis. Three or four hours after the injection, fishes show more movement and evident signs of excitation, proceeding spawning after 5 to 6 hours. Males, persecuting females, describe successive circles (merry-go-round) - carroussel), swimming side by side with females up to water's surface, where sexual products are start beating dry, for there is no blood yet. Circulation-scheme is to be found on fig. 4 and 5. The swim-bladder and the stomach are but delineated; the intestine is formed by a cylindric tube, all closed. At the place, where later on there will open the mouth, we find a group of ciliary hairs that produce a liquid current, very evident by the semi-circle formed by attached solid particles. After 36 hours, opening of the mouth and formation of the gill slits begin. At the age of 90 hours (4 mm.) the larvas swim well and start to feed themselves; the digestive tube is now all open and the swimbladder works already. During the first days of life, larvas have an adhesive organ situated at their frontal region (fig. 7) in form of a crescent, by means of which they hang to surrounding vegetation (fig. 6). When the larva begins to swim and to feed itself and its yolk are having been absorbed. the adhesive organ retracts and disappears. While larvas and alevins feed themselves with plancton, they have small eye-teeth, which disappear,. when fishes become « ilyophagus ». There exist too, during their life as larvas, pharyngeal-teeth. The lateral line appears in the larva after 16 to 18 days; more or less at the same time all fins are completely developed. Shortly after, first scales appear (20 to 23 days). Evolution of intestines twisting followed (fig. 9). Larvas show at different parts of their bodies small of organs excretory functions, that are constituted by bottons in serial disposition, every one with an excretory canal that opens towards the outside. These formations disappear suddenly when larvas attain their phase of alevin. The existence of a great number of said formations at the caudal fin (fig. 12) is of great interest. In our experiences of breeding we have employed several thousands of C. elegans larvas in different environs and we made conditions of surrounding change (illumination), depth of water, temperature, presence of sand at bottom of aquariums and without sand, food). In this way we could compare the results obtained, estimate the action of each factor for the realisation of a good bring-up of larvas.

Sobre a nefrosclerose maligna

1º - Das aus den oeffentlichen Krankenhäusern von Rio de Janeiro stammende Sektionsmaterial umfasst einen beträchtlichen Prozentzatz von Individuen schwarzer und gemischter Rasse. Es besteht durchweg aus Angehörigen der sozial und oekonomisch niedersten Bevölkerungsschichten der Stadt und ihrer Vororte, die gemessen am Standard der Gesamtbevölkerung unter den dürftigsten hygienischen Bedingungen leben. So fanden sich unter 212 Autopsien aus dem Anfall der Pathologisch-Anatomischen Abteilung des Institutes Oswaldo Cruz im Jahr 1920 bei 111 Fällen schwarze oder Mischlinsfarbe protokolliert, (52,3%). Unter 349 Sektionen der gleichen Abteilung im Jahr 1938 waren 184 (= 52,7%) von Individuen von schwarzer oder gemischter Rasse. Ein derartiges Material bietet guenstige Bedingungen fuer die Untersuchung der Bedeutung der Rassenzugehoerigkeit als aetiologischem und pathogenem Faktor fuer bestimmte Affektionen, bei welchen sie in der Literatu in diesem Sinn angeführt worden ist. 2º - Unter 1080 Sektionen von Indiduen männlichen Geschlechts jeder Altersstufe aus dem Material der gleichen Abteilung der Jahre 1918-1926 fanden sich bei 214 Faellen syphilitische Befunde protokolliert. (19,8% der Faelle.) 129 (12%) wiesen eine Aortitis oder Arteritis syphilitica auf. 3º - Das histologische Material einer Serie von 528 Autopsien von Individuen im Alter unter 40 Jahren wurde auf das Vorkommen der fuer Nephrosclerose maligna (FAHR) typisch erachteten pathologischen Veraenderungen untersucht. Es wurden 4 Faelle festgestellt, die das Bild dieser Nephropathie zeigten. Unter den 528 Individuen dieser Gruppe waren 244 Weisse, (46,2%) 274 Schwarze oder Mischlinge (51,8%) Bei 10 war die Rassenzugehoerigkeit nicht ersichtlich. 4º - Unter Heranziehung von 6 weiteren Faellen aus anderen Serien von Sektionen der letzten 4 Jahre beläuft sich die Gesamtzahl der mikroskopisch festegestellen Faelle von Nephrosclerose maligna unter dem Material der Pathologisch-Anatomischen Abteilung des Institutes auf 10. Bei einem dieser Faelle (weiblichen Geschlechts) fand sich diese Nephropathie zusammen mit einer congenitalen Missbildung (Aplaise der linken Niere, des Ovarium und der Tube dieser Seite und Hypoplasie des Uterus). 7 dieser Faelle waren maennlichen Geschlechts. 3 waren von weisser, 2 von schwarzer Rasse, 5 waren mischrassig. 5º - Unsere Beobachtungen bieten keinen Anhalt fuer die Annahme, dass der Syphilis oder der Rassenzugehoerigkeit eine besondere Bebeutung fuer die Pathogenese der Nephrose maligna zukommt.

Lactacidemia: métodos de dosagem do ácido lático

A critical study of three methods for the determination of lactic acid (EDWARDS, MENDEL & GOLDSCHEIDER, MILLER & MUNTZ) is presented and some modifications are proposed. It was shown t hat more accurate results could be obtained with Edward's technic when an Iena glass filter is connected with the absorption tube. Before the dropping of the permanganate solution it is necessary to pass a current of air through the reaction flask to avoid the oxidation of the non-lactic acid substances which interfere with the reaction. The absorption tube must be maintained at 18°C during the destillation and the titration of the bisulphite binding aldehyde at 4°C. When the sample contains more than 5 mg it is useful to work with greater quantities of the bisulphite. More permanganate is consumed when the lactic acid concentration is higher. The sensivity of the method permits the titration of 0.04 mg to 5 mg of lactic acid in the sample. The calculated error of the method gave 0.018 % and the normal values for blood determined in 20 human cases averaged 10.30 mg per 100 ml (Table VI). MENDEL and GOLDSCHEIDER'S method was modified in the following details: Somogyis deproteinization was performed instead metaphosphoric acid as in the original method; to avoid the evaporation of the acetic aldehyde during the heating time with sulfuric acid a special glass stopped tube is proposed (Fig. 2). The reaction with sulfuric acid and veratrol is performed in an ice bath. Blood proteins precipitants were tried and Somogyi's lattest tecnic showed better results (Table V). Colorimetric readings were done in the PULFRICH photometer using filter S 53 and a 10 mm cup. The method is accurate within an error of 0.23 % and samples of 5 to 70 microg. could be easily determined. Normal values for human blood averaged 10.78 mg per 100 ml. More accurate results were obtained with the technic of MILLER & MUNTZ. Slight modifications were introduced: deproteinization with copper sulfate and sodium tungstate; satured p-hydroxydiphenyl solution according to KOENEMANN which is stable for 5 months when stored in the ice-box. Using the PULFRICH step-photometer the error is 0.17% with samples varying from 0.1 to 10 microg. of lactic acid. The filter employed was S 57 with the 5 mm cup. The method was adapted to 0.1 ml of blood. Normal values for human blood gave an average of 10.58 mg per 100 ml.

Subsídio ao melhor conhecimento do tifo exantemático neotrópico no Brasil: presença do virus no leite

In articles, already published, we have proved that the strain V. B. of Brazilian virus, goes through the placenta (Macacus rhesus) (1) and the apparently normal gastro-intestinal tube (1934-1937) (Canis familiaris) (2). Today we present the idea that the Brazilian virus can reach the milk of an animal even when the latter has only the unapparent disease. In former articles (**), we have shown that the goat (Capra hircus) can be an excellent reservoir of Brazilian virus, having the strain V. B. in its blood and presenting a Weil Felix reaction high and in “group”, with the disease unapparent. When the goats are bred in the laboratory, and even in some foci of the disease, they give a negative Weil Felix, being zero for all the nine strains of Proteus. In the interior of Brazil, in many localities, goats substitute cows, in supplying milk for children and adults, and in some districts goat’s milk is considered superior to cow’s milk, possessing marvellous qualities for men, women an children. Having proved, now, that goat’s milk can contain the virus even when the animal presents nothing clinically, and having also shown that this virus goes through the digestive tube apparently sound, it is easy to understand how infants-in-arms, that is, only a few months old, living in strictly domestic surroundings, can contract the disease; we have many such cases on record. Protocol of the experiments: Goat nº 2, white, January 1948. This animal had been inoculated with the V. B. strain of the Brazilian virus in June 1947, via intra-peritoneal, presenting nothing then, not even a feverish reaction. On that occasion it was not possible to isolate the virus of the blood, although the Weil Felix reaction was positive, high and in “group”. Now January 17, 1948, seven months later, the same animal was reinoculated with a semple of virus V. B. in the same manner (intra-peritoneal) two days after bringing forth two sturdy kids. The virus V. B. was obtained from guinea-pig n. 7170 whose thermic graph was as follows: Temperatura – 38,8 – 39,1 – 39,5 – 39,4 –39,8 – 40,4 – 40,2 – 40,1 - + Necropsy – Typical lesions. The spleen weighed 5 grammes. With 3c.c. of emulsion from the nervous system of this guinea-pig, we inoculated not only the goat, as also two guineapigs, number 14 and number 5. The following is the thermic graph of one: - Guinea-pig n. 14 – 38,9 – 39,1 – 39,2 – 39.2 – 40,7 – 41,0 – 40,5 – 40,4 – 40,1 - + Typical lesions. Guinea-pig n. 2 presented the following thermic graph after the infective inoculation: - 39,5 – 39,7 – 39,7 – 39,7 – 39,5 – 39,3 – 39,5 – 39,5 – 39,5 – etc. Clinically, this animal presented nothing unusual, feeding well and suckling the kids normally. The Weil Felix reaction was positive, in “group” high very similar to the reaction obtained in June 1947, with the first infective inoculation. On the third, fourth, fifth, sixth and seventh day after the infective inoculation, we took milk from the goat and inoculated male guinea-pigs via intra-celular and via intra-peritoneal, giving 5 c.c. to each animal. Guinea-pig n. 4663, inoculated with 5 c.c. of milk, via intra-muscular, taken on the third day of the infectaive inoculation, presented the following thermic graph: - 38.8 (*) – 39,1 – 39,0 – 39,1 – 40,1 – 40,1 – 40,8 (**) – 40,8 – Killed – Typical deisions (***). The virus V. B. of this goat, circulated naturally in the blood up to the third day, having passed into the milk, producing nothing in the kids, on account of the natural resistance of these animals to the disease. The Weil Felix reaction and that of Widal for the Burcellas suis, abortus and militensis were negative for the goat and the kids. It is remarkable that, even with inoculation of the living virus after a period of seven months we cannot get a real and absolute immunity of sensitive animals. We shall return to this subject later. The hart Mazama simplicicornis may be a carrier of the virus in Brasil. The experimental serum against the virus of Exanthematic neotropical typhus has not protected guinea-pigs.

Isolamento e estudo experimental de duas novas culturas de bacilos ácido-alcool resistentes de muco nasal de leprosos

The A. described on December 14, 1951, his first culture of acid-fast bacillus isolated from nasal mucus of a leprous girl. in this paper the A. describes two new strains of acid-fast bacilli gotten also from nasal mucus of other two leprous girls, L3 cases. The first patient (layse S) had her mucus treated by petroff's method on December 16, 1952 and sown onto three tubes of loewenstein medium and in glycerin broth. After two weeks incubation at 37°C all three tubes of Loewenstein showed many punctiforme and pin-head yellowish colonies, whose microscopic examination proved to be of a pure acid-fast bacillus culture. This sample inoculated in rats and mice produced, after 55 days incubation, small tumors from which the culture was easily recovered. On April, 9, 1953 a new sample of nasal mucus of the same patient was sown in three tubes of Loewenstein. After two weeks incubation at 37°C all 3 tubes showed germination of small yellowish colonies of acid-fast bacilli. Within four months being gotten two samples of identical cultures in all smeared tubes of Loewenstein medium sown, proved that such cultures were not an ordinary ambient contamination. Second patient: - Maria N. After various sowing of different kinds of material from her, february 26, 1953 her nasal mucus treated by soda and sown onto Loewenstein medium, after 25 days incubation showed in only one tube, one small round colony, at first white, becoming creamy after three months. Transplants in various media grew at first slowly and after 2 or 3 generations grew faster. The "Layse" strain produced pellicle in glycerin broth and Dubos medium; the "Maria N." strain did not produce as yet. Both strains (Layse I and II, and Maria N.) gave weak positive Dubos test in half-an-hour and negative after 24 hours reading. Both were strongly positive when stained by Gram, Ziehl-Neelsen and Fontes methods. Both strains gave also positive fluoroscopy. These cultures are being studied. The A. concludes that, according to his experience, the slower growing cultures of acid-fast bacilli isolated from leprosy material, are the more suitable for experimental work. Aknowledgement. The A. thanks to Miss MARIA DE LOURDES SANTANA for her valuable collaboration in the studies of the described cultures.

Observation on the morphology of Australorbis glabratus

The present morphological study of A. glabratus was based on the observation of shell, radula, renal region and genitalia of 50 specimens having a shell diameter of 18 mm. In this summary we record the data pertaining to the chracteristics that can be used in systematics. The numerals refere to the mean and their standard deviation; no special reference being made, they correspond to length measurements. Shell: 18 mm in diameter, 5.59 ± 0.24 mm in greatest width, 5 to 6 whorls. Right side umbilicated, left one weakly depressed. Last whorl about thrice as tall as the penultimate one at the aperture, the measurements being taken on the right side. Aperture perpendicular or a little oblique. Body, extended: 47.06 ± 3.31 mm. Renal tube: Narrow and elongated, 23.84 ± 1.90 mm, showing a pigmented ridge along its ventral surface. Ovotestis: 12.78 ± 1.50 mm. Mainly trifurcate diverticula attaching in fan-like manner to the collecting canal (this arrangement is seen to best advantage in the cephalic middle of the ovotestis). The collecting canal greatly swells at the cephalic end, narrowing suddenly as it leaves the ovotestis. Ovisperm duct: 13.70 ± 1.68 mm, including the non-unwound seminal vesicle. The latter, situated about 1 mm from the beginning af the ovisperm duct, was 1.14 ± 0.29 mm in greatest diameter, and is beset by numerous short diverticula. Sperm duct: 14.16 ± 1.27 mm, pursuing a sinous course along the oviduct. Prostate: Prostate duct 5.53 ± 0.74 mm, collecting a row of long diverticula, the latter 21.6 ± 3.5 in number. Last diverticulum generally simple or bifurcate, penultimate generally arborescent, bifurcate or simple, antepenultimate nearly always arborescent, the remaining ones arborescent. The arborescent diverticula frequently give off secondary branches. Vas deferens: 17.50 ± 2.05 mm. The ratio vas deferens/vergic sac was 4.7 ± 0.6. Verge: 3.70 ± 0.54 mm long, 0.12 ± 0.03 mm wide. Free end tapering to a point where the sperm canal opens. No penial stylet. Vergic sac: 3.77 ± 0.50 mm long, 0.19 ± 0.01 mm wide. The length ratio vergic sac/preputium was 1 ± 0.02. Preputium: Deeply pigmented, 3.79 ± 0.40 mm long, 0.89 ± 0.12 mm wide in the middle. Muscular diaphragm between it and the vergic sac. Two muscular pilasters along its lateral walls. Oviduct: 10.24 ± 1.29 mm, suddenly swollen at the cephalic end so that it forms a folded pouch capping the beginning of the uterus. Uterus: 10.58 ± 1.18 mm. Vagina: 2.06 ± 0.15 mm long, 0.32 ± 0.05 mm wide, showing a swelling at its caudal portion, just above the opening of the spermathecal duct. Spermatheca: 1.57 ± 0.41 mm long, 0.92 ± 0.23 mm wide. Spermathecal duct 1.15 ± 0.23 mm. Radula: 125 to 163 rows of teeth (mean 141.4 ± 9.8). Radula formula 27-1-27 to 34-1-34 (mean 30.9 ± 1.7).