704 MR. G. E. DOBSON ON THE MOLOSSI. [Nov. 7, 



genus Myopterus in the perfectly similar form of its antitragus, and 

 in the shape of its muzzle. 



The subgenus Mormopterus is distinguished from Nyctinomus by 

 the absence of the first minute upper premolars, and by the distinctly 

 separate ears ; but N. norfolcensis, Gray, is quite intermediate, 

 agreeing with Nyctinomus in dentition, and in other respects with 

 Mormopterus ; and the discovery of A r . aloiventer, Dobson (described 

 further on), adds another intermediate form*. 



Genus Cheiromkles. 



Cheiromeles, Horsfield, Zool. Researches in Java, 1824 ; Temminck, 

 Monogr. Mamm. ii. p. 345 ; Dobson, Monogr. Asiatic Chiroptera, 

 p. 177, 1876. 



Ears separate, as in Taphozous ; extremity of the muzzle pro- 

 jecting considerably beyond the lower jaw ; lips smooth, not grooved 

 by vertical wrinkles ; first toe much larger than the others, and 

 separable from them. 



Dentition. — Inc. ^, C. pjj, Pm. j£^>, M. g^. 



Premaxillary bones well developed, conjoined, supporting two 

 strong incisors. 



Cheiromeles torquatus. 



Cheiromeles torquatus, Horsfield, /. c. 



Dysopes cheiropus, Teinm. /. c. i. p. 218, pi 17. 



Cheiromeles caudatus, Temm. /. c. ii. p. 348, pi. 66. 



Ears shorter than the head, triangular, with narrowly rounded 

 tips ; the inner margin of the ear-conch papillate along upper half 

 as in some species of Taphozous ; antitragus distinct, rounded ; 

 tragus very small, the inner margin not developed, the outer with a 

 small projection near the base. Muzzle long, obliqnely truncated, 



* The following is a synopsis of the characters of these subgenera: — 

 Synopsis of Subgenera of Molossi. 

 Gen. Molossus. 



a. Ears more or less united. 



a'. Premolars 5—5; upper incisors with di- 

 verging summits, and with their broad 

 bases close to the canines l'romops. Gervais. 



b'. Premolars t^j, J upper incisors parallel by 

 their inner margins, their bases close to 

 the canines Molossus((jceoQ'r.), Peters. 



b. Ears distinctly separate; upper incisors with 



diverging summits, their bases removed from 



the canines by a diastema Myopterus, Geofifr. 



Gen. Nyctinomus. 



a. Ears very close or united together ; upper lip 



deeply grooved by vertical wrinkles ; pre- 

 molars '~ ? Nyctinomus (Geoflfr.), Pe- 



b. Ears distinctly separate ; upper lip slightly 



wrinkled; premolars^ Mormopterus, Peters. 



