I. The genera Pedilanthus and Cubanthus, and other American Euphorbiaceae, by Charles Frederick Millspaugh. II. Two new stonecrops from Guatemala, by Raymond Hamet.

v.2:no.9(1913)

Two new species of palms from Nicaragua [by] S. F. Glassman.

v.31:no.1(1964)

Two new Nicaraguan Juglandaceae [by] Antonio Molina R.

v.31:no.16(1968)

Two new Guatemalan Tournefortias / [by] Dorothy N. Gibson.

v.32:no.5(1969)

Two new birds from Peru, by John T. Zimmer ... Reports on results of the Captain Marshall Field expeditions ...

v.12:no.8(1925)

Remarks upon two species of deer of the genus Cervus from the Philippine Archipelago, by D. G. Elliot.

v.1:no.7(1897)

Description of two new pulmonate mollusks, with a list of other species from the Solomon Islands, collected by George H. Dorsey.

v.7:no.8(1910)

Two new rodent genera from the Oligocene White River formation (family Heteromyidae) / William G. Reeder --

v.10:no.35(1960)

Two new mammals from southern Peru.

v.31:no.44(1951)

Two new species of birds from Angola.

v.39:no.5(1957)