302 



YESPEIlTILIONIDjE. 



is of Indian, Ceylonese, and Burmese Species of. Vesperugo. 



Subgeuus VESPERUS. 



V. serotinus, p. 303. 

 V. nasutus, p. 304. 



V. borealis, p. 305. 

 V. discolor, p. 305. 



V. atrntus,p. 306. 

 V. pachyotis, p. 307. 



V. pachypus, p. 307. 



Subgenus VESPERUGO. 



V. noctula, p. 308. 

 V. leislen, p. 309. 



V. mordax, p. 310. 

 V. circumdatus, p. 312. 

 V. affinis, p. 311. 

 V. ceylonicus, p. 312. 



V. abramus, p. 313. 

 V. jnptstrellus, p. 314. 



A. Incisors ^ ; outer upper incisors in a line 



with inner or anterior to them ; premolars 

 }~ (four teeth behind canine in the upper 

 jaw) ; wings from base of toes .......... 



. No thickened base to ear, nor swollen pads 



to feet. 

 a'. Forearm 2 inches or more long- ...... 



Forearm less than 2 inches. 

 a". No postcalcaneal lobe ; forearm 1'45. 

 b". Postcalcaueal lobe present. 

 a. Ears much shorter than head. 

 a'. Tragus broadest below middle of 

 inner margin ; forearm 1'5 . . . . 



ft'. Tragus broadest above middle of 

 inner margin ; forearm 1'6. ... 



ft. Ears nearly as long as head ; fore- 

 arm 1-7 ...................... 



b. Base of ear thickened; forearm 1'6 ...... 



c. Soles of feet and base of thumbs with 



broad fleshy pads; forearm I'l ........ 



B. Incisors ^, outer upper incisors in same 



line as inner, or anterior to them j pre- 

 rnolars |^| (five teeth in upper jaw behind 

 canine), first upper premolar minute .... 



a. Wings from ankles. 



a. Forearm 2 inches or more .......... 



b'. Forearm about 1'65 .............. 



b. Wings from base of toes. 

 a'. Tragus rounded above. 



a". Tragus broadest about middle of 



inner margin. 

 a. Fur above black. 



a'. Outer upper incisors but little 

 shorter than inner ; a postcal- 

 caneal lobe ; forearm l-oo .... 



ft'. Outer upper incisors very short ; 

 no postcalcaneal lobe ; forearm 

 1'5 ........................ 



ft. Fur above brown. 



a'. Outer upper incisors acutely 

 pointed; forearm 1-5-5 ........ 



ft'. Outer upper incisors hollowed to 

 receive lower canines ; fore- 

 arm 1-65 .................. 



Tragus broadest slightly ab&ve base 

 of inner margin. 

 a. Outer upper incisors more than half 



length of inner. 



a'. Outer margin of ear below tip 

 straight ; forearm 1-3 ........ 



ft'. Outer margin of ear below tip 

 concave ; forearm 1'25 ...... 



b". 



