. Smithsonian miscellaneous collections. d a median dorsal line is usuallyprominent. But the single species of Uroderma may be distinguishedby the naked or minutely haired posterior margin of the interfemoralmembrane in combination with the length of the forearm (about45 millimeters). The skull is very similar in general to that ofVampyrops, but is easily recognizable by the bifid upper teeth are 32 in number. URODERMA BILOBATUMYellow-eared Bat Uroderma bilobatum Peters, Monatsber. k. Preuss. Akad. Wissensch. Berlin, p. 587, 1866. Type from Sao Paulo, convexum Lyon
. Smithsonian miscellaneous collections. d a median dorsal line is usuallyprominent. But the single species of Uroderma may be distinguishedby the naked or minutely haired posterior margin of the interfemoralmembrane in combination with the length of the forearm (about45 millimeters). The skull is very similar in general to that ofVampyrops, but is easily recognizable by the bifid upper teeth are 32 in number. URODERMA BILOBATUMYellow-eared Bat Uroderma bilobatum Peters, Monatsber. k. Preuss. Akad. Wissensch. Berlin, p. 587, 1866. Type from Sao Paulo, convexum Lyon, Proc. Biol. Soc. Washington, Vol. 15, p. 83, April 25, 1902. Type from Colon, Panama. In addition to and in combination with recognition charactersgiven under the genus the yellowish color of the ear margins of 1 Collection Mus. Comp. Zool. NO. 5 MAMMALS OF PANAMA GOLDMAN 199 Uroderma bilobatum, distinct in fresh specimens and fading in dry-skins, might be mentioned. The species ranges from southern Brazilnorth at least to Costa Fig. 15.—Uroderma 153563, U. S. Nat. Mus. About nat. size. In the forest near Gatun Uroderma bilobatum was located severaltimes, a few in a place, clinging during the day in clusters to themidribs on the under sides of large palm leaves. They usuallychoose darkened spots where the leaf was folded over, or overhang-ing pinna? shut out much of the light. Andersen (1908, p. 220) in a revision of the genus places Urodermaconvexum Lyon in synonymy. Comparisons made by me seem tojustify this disposition of the name. Andersen records Panamaspecimens from Colon, Brava Island, Cebaco Island, Jicaron Island,Insolita Island, and Gobernador Island. With the exception of Colonthe same localities for specimens in the British Museum had beenlisted by Thomas (1903a, p. 40), who also questioned the validity ofUroderma convexum Lyon. A specimen erroneously referred by Bangs (1901, p. 644) toVampyrops helleri was collected by W. W. Brown, Jr., on
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