0. ^T,3PEKTJao. 209 



This species has been made by Dr. Peters the type of a new 

 genus, Tt/loni/cteris, distinguished by the large cushions on the base 

 of the thumbs and soles of the feet, by the shortness of the thumbs 

 and smallness of the thumb-nail, and by the remarkable flatness of 

 the skull. The discovery by the writer (subsequently to the publi- 

 cation of the definition of this new genus) of similar adhesive 

 cushions in other species of the genus Vesperugo not closely related 

 to this species, renders this character of very little importance in a 

 generic sense, especially as some of these species are evidently most 

 closely allied in all other respects to species which have not a trace 

 of these foot-pads (e. g. V. blanfordi) ; and the shortness of the 

 thumbs and thumb-naU is, proportionally, as much pronounced in 

 v. noctula, while the flatness of the skuU appears to be nearly as 

 weU marked in F". nasutus. 



T. C. Jerdon, E3(^[PJ. 

 G. E. Dobson, M.B. [E.]. 

 Purchased. 

 Dr. Meyer [C.]. 

 Purchased. 



Znc. ?^, pm. ^—^, the first upper premolar minute, internal to the tooth-row ; 

 ■ tlie second premolar close to the canine or separated hy a narrow interval, 

 through which the first premolar is rarely visible from without ; ears 

 short, triangular, not exceeding the head in length, the outer margin of 

 the conch carried forward to the angle of the mouth ; tragus shorter and 

 broader than in Vesperus ; postoatcaneal lobe generally well developed. 

 Hab. Eastern Hemisphere, one species only extending into the 

 Western Hemisphere. Subgenus Vespebugo. 



Synopsis of the Species. 



A. Thumb and feet simple, without adhesive cushions. 

 a. Wings from the ankles or from the tibiae 

 higher up. 

 a'. Ti-agus expanded above and curved inwards, 

 reaching its greatest width above the middle 

 of its inner margin. 

 a". Inner margin of the tragus deeply con- 

 cave. 

 a"'. Wings from the ankles; the extreme 

 tip of the tail alone projecting from the 

 interfemoral membrane ; postcalcaneal 

 lobe well developed. 

 «. Fur unicoloured above ; upper outer 

 incisors double the size of the inner 

 incisors in cross section at the base ; 

 lower incisors at right angles to the 

 direction of the jaws ; forearm 2" to [p, 212. 



2"-8 23. F. noctula, 



/3. Fur hicoloured above; upper outer 

 incisors equal to the inner incisors 



