new Gtnus of Vespertilionine Bat. 221 



Wings comparatively sliort, the forearm length much less 

 than that of the trunk. i\letacar|)al of fifth finger much 

 shorter than those of the other fingers, and its two terminal 

 phalanges together only equalling the first phalanx of the 

 middle finger. Wings attached to the lower end of the tibia. 

 Calcar of medium length ; a distinct postcalcareal lobule 

 present. Tail included in membrane nearly or quite to its 



Penis without prepuce ; its gland curiously complex. 

 There is proximally on the upperside a double rough-surfaced 

 cushion, from below the centre of which springs forwa^d an 

 upwardly curved projection, ending in a single pointed 

 cushion with the opening of the urethra at its tip. The os 

 penis is strongly curved, bifid proximally and expanded 

 terminally, about 2'r) milliin. in length ; its bifid base appears 

 to support the proximal double cushion ot tlie gland and its 

 end to support the projecting tip. In TIesperoptenus * the 

 complexity of the male organ is of quite a different nature, 

 and the 05 /)(?n?s, although similarly bifid basally, is not ex- 

 panded terminally. 



Female organs also complicated. Vulva very small, longi- 

 tudinal instead of transverse, situated some distance from the 

 anus ; between the two on the perineum are two large 

 rounded cushions separated by a median groove, their surface 

 covered with minute hairs. In Hesperoptenus the female 

 organs are noriital and the vulva is, as usual, transverse. 



Jt appears probable that the slender projecting tip of the 

 glaiis penis alone enters the minute opening of the vulva. 



Fur short and close, apparently f confined to the body 

 above, the membranes naked. Below the same, except that 

 the wing internal to a line from the elbow i) the knee is 

 fintdy clothed. 



Colour above (in alcohol) reddish brown, rather paler 

 below. 



Skull as above described. 



Anterior upper incisors short, strongly projecting inwards ; 

 their outer supplementary cusp approaching the main one 

 in size. Outer incisor small, conical, pointed, rather smaller 

 than the outer cusp of i\ Canine with a small secondary 

 basal cusp behind. Premolar pressed close against canine. 



* I owe to the kindness of Pr. Gestro, of the Genoa Museum, the 

 opportunity of examininof the type of Hexperoptenus Dorue,t\\>i \.y\>ic&\ 

 species of the genus, and have verified that the structure of its penis is 

 precisely as in the Indian H. Tickelli. 



t The distribution of the fur is not easily deteroiined, as all the 

 specimens are in a bad state of preservation. 



Anu.ii' Mag. X. Hist. Ser 7. Vol. ix. IG 



