a new Genus of Phyllosiorne Bats. 311 



obsolescent and rounded as in Sturnira, though perhaps a 

 little less so, 



Lower incisors only two, bicuspid, in the narrow space in 

 front of the nearly approximated canines. Other lower teeth 

 separated from each other, of about the same breadth, but 

 shorter antero-posteriorly than their homologues in Sturnira. 



Type. Corvira bidens, sp. n. 



Owing to the extreme isolation of Sturnira, considered by 

 Miller as forming a special subfamily, the discovery of 

 another genus allied to it is of much interest. In the more 

 triangular shape of m 1 and rather better developed cusps to 

 some of the teeth, Corvira is perhaps slightly less specialized 

 than Sturnira, while in the total suppression of the outer 

 lower incisors it has a peculiarity unknown in this group of 

 the Phyllostomidai. 



Corvira bidens, sp. n. 



Size and general appearance very much as in Sturnira 

 lilium. Fur close, velvety, hairs of back about 6 mm. in 

 length. General colour above dark grey-brown — nearly 

 " blackish brown," — the individual hairs pale brown for their 

 basal half, silvery grey for their next fourth, their tips 

 blackish ; the crown blacker, across the shoulders rather 

 greyer, the back again blacker, but these differences quite 

 slight. Under surface uniformly brown (near mummy- 

 brown), the hairs brown to their bases. Legs and feet 

 hairy, as in Sturnira, the feet proportionally rather larger. 

 Wings uniformly brown. 



Skull and teeth as described above. 



Dimensions of the type (which is somewhat immature) : — 



Forearm 43 mm. 



Head and body (on skin) 73 ; nose-leaf (dry) 7 ; ear (dry) 

 from internal base 10 ; third finger, metacarpus 42, first 

 phalanx 17, second phalanx 21*5 ; foot (c. u.) 16. 



Skull : greatest length 22*2 ; condylo-basal length 20 ; 

 zygomatic breadth 12*5 ; interorbital breadth 55 ; mastoid 

 breadth 11*7 ; palatal length 10 ; front of canine to back of 

 m 3 6'7 ; breadth between outer corners of m 2 7. 



Hah. (of type). Baeza, Upper Coca River, Oriente of 

 N. Ecuador. Alt. 6500'. 



Type. Immature male. B.M. no. 15. 7. 11. 7. Original 

 number 19. Collected April 1914, and presented by Walter 

 Goodfellow, Esq. 



The peculiar knack possessed by Mr. Goodfellow of 



