236 VESPEETILIONID^. 



Length (of an adult J preserved in spirits), head and body l"-7, 

 tail l"-6, tail free from membrane 0"-15, head 0"'58, ear 0"-65, 

 tragus 0"-23, forearm l"-35, thumb 0"-35, third finger 2"-45, fifth 

 finger l"-8, tibia 0"-6, foot 0"-38. 



Hah. North America. 



a. $ not quite ad., al. Zool. Soc. Collection. 



b. 5 ad., al. Smithsonian Institute. 



c. $ ad., al. Smithsonian Institute. 



42. Vesperugo tylopus. 



Vesperugo (Glischropus) tylopus, Dobgvn, P. Z. S. 1875, p. 473; 

 Monogr. Asiat. Chiropt. p. 114 (1876). 



Muzzle broad and evenly rounded in front ; nostrils opening on a 

 level vrith the glandular prominences on each side, and without in- 

 tervening emargination ; glands of the upper lip greatly developed, 

 forming smooth, almost naked promiaences, causing a furrow along 

 the centre of the face behind the nostrils. Ears triangular, nar- 

 rowed above, with rounded tips, the ascending part of the inner 

 margin very faintly convex, nearly straight ; the upper third of the 

 outer margin straight, succeeded by a considerable convexity, caus- 

 ing the upper third to appear concave, then distinctly angularly 

 emarginate opposite the base of the tragus, and terminating in a 

 weU-defined lobe midway between the base of the tragus and the 

 angle of the mouth, but on a lower level than the mouth. This 

 angular emargination and round terminal lobe are even better- 

 defined than in V. nanus. Tragus faintly concave along the inner 

 margin, outer margin slightly convex, tip obtusely rounded off ; a 

 minute very acutely pointed projection slightly above the base of the 

 outer margin (Plate XII. fig. 8, head, double natural size). 



Thumb rather long ; ihe whole of the lower surface of the basal 

 half occupied by a naked rounded callosity of a pale yellow colour 

 (in alcohol), with transverse wrinkles ; the sole of the foot is simi- 

 larly formed, but the surface is flat or slightly concave. The light 

 yellow colour of the callosities or elastic and adhesive pads of the 

 thumbs and feet contrasts remarkably with the very dark colour of 

 the integument of the surrounding parts. 



Postcalcaneal lobe distinct ; extreme tip of taU projecting. Inner 

 upper incisors long, bifid, the smaller cusp placed posteriorly and 

 externally near the extremity; outer incisors very short, but in 

 cross section equal to the inner ones, placed in a plane slightly an- 

 terior, the single cusp sloping inwards and lying against the cingulum 

 of the inner incisors. Lower incisors trifld, not crowded. First 

 upper premolar internal, but visible from without. 



Length, head and body 1"*55, tail l"-5, head 0"-55, ear 0"-5, 

 tragus 0"-2, forearm l"-2, thumb 0"-26, third finger 2"-4, fifth finger 

 l"-65, tibia 0"-55, foot 0"-26. 

 Hah. North Borneo. 



a. $ ad., al. (type). North Borneo. Purchased. 



