1000 resultados para Hambrough, Windsor Dudley Cecil, 1873-1893
Resumo:
10
Resumo:
4
Resumo:
7
Resumo:
v.3:no.3(1906)
Resumo:
Zoology v.28 [pt.77]
Resumo:
Callistochiton edwini n. sp. (Callistoplacidae Pilsbry, 1893) a new species from the continental platform of Pernambuco, Brazil, South America is described and illustrated. Identification may be made by characteristic morphological aspect of shell and elements of girdle, which are peculiar to this species.
Resumo:
Biomphalaria prona from Lake Valencia, Venezuela (type locality) has a polymorphic shell wich in the great majority of specimens is wider, with fewer rapidly expanding whorls, the outer one subcarinate on the left side and more or less strongly deflected leftward. Besides those modal forms there are little frequent variants characterized by narrower shell with less rapidly expanding, regularly curved whorls directed forward. Recent studies have shown that such variants constitute the predominant shell phenotype in extralacustrine populations, but are anatomically and biochemically indistinguishable from the modal class of the Lake. In the present paper it is demonstrated that the nominal species Planorbis meridaensis Preston, 1907, from Mérida, Venezuela, is identical with B. prona (Martens, 1873) of wich it must be considered a junior synonym.
Resumo:
To date this project has underwent phase 1 and is undergoing the implementation of phase 2. The first phase aimed to make students aware of issues surrounding STIs and their health implications. In phase two, the project aims at determining the most appropriate means of disseminating information about sexually transmitted diseases.