240 VESPERTILIONID^. 



Vesperugo (Vesperus) dorise, Dobson, Monogr. Asiat. Chiropt. p. 112 

 (1876). 



Ears quadrilateral, rounded, not emarginate, the outer margin 

 terminating in a distinct lobe near the angle of the mouth ; tragus 

 rounded at the tip and curved inwards, reaching its greatest width 

 immediately below the middle of the inner margin. A small lobule 

 at the base of the outer margin. Metacarpal bones of the fingers 

 nearly equal in length. 



Wing-membrane from the base of the toes ; tail wholly included 

 within the interfemoral membrane ; postcalcaneal lobe distinct. 



Peuis with a small but distinct bone. 



Fur light brown, somewhat darker at the base of the hairs. 



Inner upper incisors long and unicuspidate ; the outer incisor on 

 each side very small, scarcely rising above the surface of the gum. 



Lower incisors crowded. 



Length (of an adult tS ), head and body 2", tail l"-6, head 0"-6, 

 ear 0"-6x0"-48, tragus 0"-26, forearm l"-4, thumb 0"-28, third 

 finger 3", fifth finger l"-9, tibia 0"-7, calcaneum 0"-6, foot 0"-25. 



Hah. Borneo (Sarawak). 



This species was made the type of a new subgenus, Hesperoptenus, 

 by Dr. Peters, on account of the extremely small size of the inner 

 upper incisors, the presence of a distinct bone in the penis, and other 

 characters, in which it differs from all the preceding species of the 

 subgenus Vesjwrus. I have not seen the type specimen ; but I think 

 it is closely allied to F". tickelli and to V. hlanfordi, which also have 

 a distinct bone in the penis, and in which also the external upper 

 incisor on each side is not only small, but is placed posterior to the 

 canine and inner incisor. 



Type in the collection of the Marquis Doria. 



46. Vesperugo tickelli. 



Nycticejus tickelli, Blyth, Journ. Asiat. Soc. Beng. xx. p, 157. 



Nycticejus isabelUnus, Rffrsjield, Catal. Mammal, Mus. E. Ind. Com- 

 pany (1851). 



Vesperugo tickelli, Dobson, Monogr. Asiat. Chiropt. p. 113, figs, a, h 

 (1876). 



Head broad and flat ; muzzle obtuse ; glands of upper lip well 

 developed ; nostrils without intervening emargination, scarcely raised 

 beyond the level of lip ; lower lip with a simple naked space in 

 front; ears moderate, rounded above, outer side straight or very 

 slightly convex, emarginate opposite the base of the tragus, and 

 terminating in a small rounded lobe, in front of which, and between 

 it and the angle of the mouth, a small wart is placed ; tragus lunate, 

 outer margin very convex, inner slightly concave, rising from a nar- 

 row base, with the usual small rounded lobe at the outer side (Plate 

 XII. fig. 3, ear, enlargfed). 



Tail long, last vertebra free ; postcalcaneal lobe distinct ; feet 

 short. 



