;U0 Mr. 0. Thomas o;i 



Capt. Hutton, has undergone certain vicissitudes whicli have 

 affected the condition of tlie skull. No cranial characters can 

 tlierefore be described, and even the teeth appear to be a little 

 distorfo 1 and slirunk ; but this can in no way affect the 

 distinguishino: marks on which the <renus is based. 



XXXVI. — A neio Genus of Plvjlloslome Bats and a neio 

 lihipidomys//-o;?i Ecwidor. By Oldfield Thomas. 



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



Among a small collection of mammals from Baeza, Oiiente of 

 Ecuador, presented to the National Museum by Mr. Walter 

 Goodfellow, there occurs, besides such rarities as Artibeus 

 fjlaucns, DiphijUa ecaudata, Nasua judex, and Oryzomys 

 balneator, an example representinj^ a new genus and species 

 allied to the common Sturnira lilium of the same region. 

 It may be described as follows : — 



CORVIRA, gen. nov. 



General characters as in Sturnira, but only two lower 

 incisors present. 



External structure apparently quite as in Sturnira, though 

 the nose-leaf and ear may sliow some differences when spirit- 

 specimens are examined. Interfemoral membrane similarly 

 reduced. No glandular shoulder-tufts perce})tible. 



Skull of the general shape of that of Sturnira, but the 

 muzzle and interorbital region rather narrower. Angular 

 process of mandible shorter. 



Teeth of the same non-cuspidate character as those of 

 Sturnira. Upper incisors more disproportionate than in that 

 genus, the outer ones smaller and narrower, tiie inner pair 

 longer and slenderer, with a small supplementary basal cusp 

 postero-exfernally ; breadth of the whole incisor-row much 

 less than in Sturnira, not equalling the length of the canine. 

 Premolars and molars all slightly separated from each other ; 

 the premolars evenly oval transversely, their breadth about 

 three-fourths that in Sturnira, while their antero-posterior 

 diameter is only about half. M^ subtriangular, with rounded 

 angles, m.ore carnassial-shaped than in Sturnira ; other molars 

 about as in Sturnira. 'J'lironghout the series all cusps are 



