706* CAPT. T. HUTTON ON HIMALAYAN BATS. [June 4, 



the interfemoral membrane smooth ; as in Scot, serotinus, Scot, dis- 

 color, Scot, leisleri, and Scot, murinus of Europe, and Scot, lobatus 

 of India, which have cross lines of hair on the underside of theii.ter- 

 femoral membrane." He thus merges Nycticejus in what he would 

 make out to be Scotophilus, saying that the former is but an old, and 

 the latter a young specimen of the same genus. In this case, how- 

 ever, on the principle of " seniores priores," the adult ought to stand 

 as the type of the genus, and not the immature one ; and hence I have 

 adopted Nycticejus, of Rafinesque, in preference to Scotophilus, of 

 Leach, the more especially as Mr. Gray's own definition of the latter 

 excludes the species he cites as belonging to it ; for when he says 

 " I am inclined to confine this genus to the species which have the 

 wings attached to the ankle as far as debase of the toes," and then 

 cites Scot, leisleri as an example, we perceive at once the worthless- 

 ness of the genus, and of the definition also, inasmuch as the latter 

 species has the feet and ankles entirely free, both the membranes 

 being attached to the tibia above the ankle*\ 



Genus Nycticejus. 



Characters. — Face bluff and swollen on the sides ; muzzle nearly 

 nude in front ; wings and ears thick, rather coriaceous ; muzzle short ; 

 ears wide apart, at the sides of the head ; inner margin of ear an- 

 gular, the outer margin continued round almost to the gape or angle 

 of the mouth ; tragus falcate, tapering up to a point, half the length 

 of the ear ; head above broad and flattened ; nostrils prominent at 

 the end of the muzzle ; feet in the wing to the base of the toe, in 

 the interfemoral membrane to the ankle; eyes small and low down. 



15. Nycticejus luteus. 



Nyct.flaveolus, Blyth ; Horsf. Cat. Mamm. Ind. Mus. 



Scot, temminckii, Grav. 



Nyct. luteus, Blyth, Cat. Mam. Mus. A. S. B. 



Hab. Bengal, Sylhet, Assam, Burmah, Dehra Boon. 



This species, as far as I have been able to ascertain, never 

 ascends the hills of the north-west, although it is abundaut at ele- 

 vations of 2000 to 3000 feet, as at Rajpore, at the foot of the Mus- 

 sooree range. 



The colour of the animal when alive is a greenish olive-brown on 

 the back ; underparts silky yellow, often shining or glossy; mem- 

 branes dusky black ; carpus 2-^ in.; expanse 16^ in.; greatest 

 breadth of wing 3 in. ; from nose to tail 4\ in. ; tail from vent 

 2\ in. ; total 6| in. Interfemoral membrane paler beneath than 

 above ; feet half free, being in the wing to the base of the outer toe, 

 and in the interfemoral membrane to the ankle ; membranes nude ; 

 ears f in. apart, thus showing the great breadth of the head ; length 

 of head about 1 inch; face bluff; head thick -looking, flat-crowned, 

 and large ; muzzle nude ; lips and cheeks tumid ; the external mar- 



* Bemark by Prof. Peters. — Captain Hutton has determined erroneously 

 Minwjrferus bh^otis as Scot, leisleri. 



