284 TESPEKTILIONIDJE. 



though by no means a reliable character in Chiroptera, appears to 

 be quite constant in these species, the bright ferruginous red fur of 

 H. cyclotis contrasting strongly with the plain brown fur of ff. 

 leucogaster. 



Length, head and body l"-9, tail l"-5, head 0"-75, ear 0"-7, 

 tragus 0"-35, forearm l"-3, thumb 0"-35, third finger 2"-5, fifth 

 finger l"-9, tibia 0"-6, foot 0"-3. 



Hah. North-western Himalaya ; Thibet. 



Type in the collection of the Paris Museum. 



u. (S ad., al. Thibet. G. E. Dobson, M.B. [E.]. 



12. VESPERTILIO. 



Vespertilio, Keys. ^ Bias. Wiegm. Archiv, 1839, p. 306; Fauna 

 JDeutschl. p. 78 (1857) ; Dobso-n, Monogr. Asiat. Chiropt. p. 126 

 (1876). 



Muzzle long; glandular prominences between the nostrils and 

 eyes small, scarcely increasing the width of the face ; nostrils 

 opening sublateraUy by simple crescentic apertures, crown of the 

 head vaulted, slightly elevated above the face-line ; ears separate, 

 oval, longer than broad, generally equalling at least, often exceed- 

 ing, the length of the head ; the internal hasal lobe angular, the 

 external margin of the ear-conch terminating opposite the base of 

 the tragus or very slightly in front of it; tragus long, generally 

 acute, and attenuated upwards. 



Tail less than (or very rarely equal to) the length of the head and 

 body ; postcalcaneal lobe absent or very small. Face hairy. 



Incisors -^ ; the upper incisors nearly equal, in pairs on either 



side close to the canines ; the cusp of the outer incisor directed 



vertically downwards or curved slightly outwards, that of the 



inner incisor directed slightly forwards and inwards, so that 



these teeth appear to diverge from each other ; lower outer 



incisors much larger than the inner incisors ; premolars g^, the 



first and second upper premolars very small, the second always 



smaller than the first, often minute and more or less internal to the 



tooth-row ; the first and second lower premolars smaUer than the 



third, the second considerably smaller than the first ; molars j^, the 



last upper molar rather less than half the antepenultimate molar. 



Range. Temperate and tropical regions of both hemispheres. 



This genus, which has probably -the widest distribution among 



the genera of Chiroptera, is easily recognised by the large number of 



teeth and the peculiar character of the incisors, wherein all the 



species agree and difier from those of the nearly allied genua 



Kerivoula. The long and narrow muzzle thickly covered with hair, 



the simple crescentic nasal apertures, the oval elongated ear and 



narrow attenuated tragus, the slender and rather long extremities, 



the thin, almost naked, membranes, the peculiar dentition referred 



to above, and the quality and distribution of the fur are characters 



in which most of the species agree together, while the few points in 



