TESPERUGO. 303 



/3. Outer upper incisors less than half 

 lengtli of inner ; interfemoral mem- 

 brane white-edged ; forearm 1'4. . V. kuhli, p. 315. 

 />'. Tragus pointed above : face hairy ; fore- 

 arm 1-8 V. amiecfensi, p. 81(1. 



2 2 



C. Incisors -g-, outer upper incisors very small, 

 behind inner incisors ; pra. -^ ; wings from 



base of toes Subgenus Hespeboptenus. 



a. Forearm 2-1 inches V. tichelli, p. 317. 



1>. Forearm Tl V. Uanfordi, p. 017. 



174. Vesperugo serotinus. The Serotine. 



\'espertilio serotinus, Schreh. Sa/fi/i-th. i, p. 1(J7, pi. 53 (1775). 

 Scotophilus serotinus, Bli/t/i, J. A. S. B, xxi, p. 3G0 ; /(/. Cat. p. 32 ; 



Jerdon, Mam. p. 34. 

 Scotophilus pachyomus, Tumes, P. Z. S. 1857, p. 50; Jerdon, Mam. 



p. 34. 

 Vesperugo andersoui, Dobsoti, P. A. S. B. 1871, p. 211; id. Man. 



As. Chir. p. 110; id. Cat. Chir. B. M. p. 195; id. Pep. Brit. 



Assoc. 1880, p. 184: Anderson, An. Zool. Pes. p. 101, pi. iv, 



figs. 2-G; id. Cat.-^. 124. 

 Vesperugo serotinus, Dobso7t, Mon. As. Chir. p. 108 ; id. Cat. Chir. 



B. M. p. 191 ; id. Second Yarkand Miss., Mam. p. 12 ; Anderson, 



Cat. p. 124. 



Ears of moderate size, the broadly rounded tips, when laid 

 forward aloug the face, are rather nearer to the nostril than to the 

 eye ; inner margin slightly convex, basal lobe rounded, outer margin 

 straight or very slightly concave for its upper half, then convex, 

 slightly emarginate opposite the base of the tragus and ending in 

 a convex lobe behind the angle of the mouth. Tragus broadest 

 just above the base of the inner margin, thence diminishing slowly 

 in breadth to the tip, which is rounded, inner margin straight or 

 slightly concave, outer convex with a small projecting rounded 

 lobe at the base. 



Head flat. Muzzle flat and thick, the sides swollen and gland- 

 ular ; face almost naked in front, but the upper lip fringed with 

 hair. Thumb with a callosity at the base. Wings from the 

 metatarsus close to the base of the toes. Postcalcaneal lobe very 

 narrow. Last two caudal vertebrse free. 



Upper inner incisors long, strong, bifid at their extremities, 

 when not worn down ; outer incisors very short, scarcely one third 

 the length of the inner pair, and lying against their outer and 

 anterior sides. Lower incisors trifid, crowded. First lower pre- 

 molar half the breadth and half the height of the second. 



V. andersoni, with smaller and narrower ears, a rather smaller 

 foot, only the last caudal vertebra free, and some other slight 

 differences, was ultimately classed by its describer as a variety of 

 the Serotine. 



Colour. Above dark smoky brown as a rule, below yellowish 

 brown to yellowish white. Specimens from dry desert countries are 

 pale buff-brown above, paler beneath. 



