230 Mr. 0. Thomas on some 



XXYIII. — Notes on some South- American Mammals, with 

 Descriptions of new Species. By Oldfield Thomas. 



(Publislied by permission of the Trustees of the British Museum.) 



The identification of some mammals which have been 

 received from Western Colombia, collected by M. G. 

 Palmer, and from Santa Catherina, collected by W. Ehrhardt, 

 lias resulted in the following notes and descriptions. 



Vampyressa pusilla and its Allies. 



Wagner's Phyllostoma pusiRum was placed by Peters and 

 Dobson in Cliiroderma, then by myself in Vampyrops, in 

 which, on account of its special dental formula, I considered 

 it to represent a peculiar subgenus, Vamp>yressa^ since raised 

 to a genus by Miller. 



One species only has been hitherto known, a native of 

 South Brazil, and our knowledge of it rests mainly on the 

 account given by Peters * of a specimen in the Leyden 

 Museum which he states to agree absolutely with Wagner's 

 type, an immature example. In his recently published 

 posthumous ' Plates of Chiroptera ' f he gives an admirable 

 figure of the Leyden specimen, which for present purposes 

 we should accept on his authority as typical. 



The British Museum contains six specimens of Vam- 

 pyressa from the western side of the Andes, and these prove 

 to belong to two species, neither of which can be assigned to 

 V. pusilla. 



Vamptyressa nymphcea, sp. n. 



Size comparatively large, slightly larger than V. pusilla, 

 considerably larger than V. thyone. General colour smoke- 

 grey, rather lighter below. Facial stripes conspicuous and 

 strongly marked, the upper ones running back to behind the 

 ears. Area round eye blackish. 



Skull largest of the genus, its shape as figured by Peters 

 in V. pusilla. 



Teeth quite differently shaped to those of pusilla. P* 

 rounded, triangular in section, without the conspicuous 

 postero-internal concavity shown in Peters's plate. M^ 

 barely as broad as long, with a broad rounded-quadrangular 



* MB. Ak. Berl. 1866, p. 395. 



t Mu.«. Zool. Berl. Chiropt. pi. xii. a. figs. 10-15 (1906). 



