348 Mr. G. E. Dobson oti a new Sjyecies o/" Nyctinomus. 



internally and behind. The mandible is narrow, narrower below 

 the true molars than below the premolars ; symphysis rather 

 long. The coronoid process rises as a triangular plate high 

 above the condyloid, which is directed backwards in a nearly 

 horizontal direction ; condyle obliquely transverse. The angle 

 is much produced, expanded into a trihedral bone and somewhat 

 bent inwards. 



In regard to the various foramina of the skull and the 

 dentition this species does not differ from C. capensis j they 

 have been fully described by Mivart {I. c). 



EXPLANATION OF PLATE XX. 



A. Three vieAvs of the skull of Chrysochloris Trevelyani: the lateral and 



upper ^dews, of the natural size j the lower, of twice the natural 

 size. 



B. Lower view of the posterior part of the skull, of twice the natural size, 



turned so as to show the ossicle (a) covering the Eustachian 

 orifice. On the left side of the skull the ossicle is removed. 



XXXV. — Description of a new Species of the Genus Nycti- 

 nomus from South Africa. J3y G. E. DOBSON, M.A., 

 M.B., F.L.S., &c. 



Nyctinomus afrtcanus^ n. sp. 



Upper lip smooth, without vertical wrinkles. Ears from 

 perfectly distinct points of origin though close together, their 

 inner margins arising from the upper surface of the muzzle, 

 though not so near the extremity of the muzzle as iniV. Cestonii] 

 tragus somewhat similar to that of N. Cestonii^ but longer, and 

 the upper margin quite evenly rounded off ; antitragus quadri- 

 lateral, the shortest side in front, the upper margin slightly 

 concave. 



Fur bright orange-chestnut above and beneath. 



Incisors f ; the lower incisors not crowded : premolars |^ ; 

 the first upper premolar very short and blunt, its base occu- 

 pying the whole space between the canine and second pre- 

 molar. 



Length (of an adult male) 3*6 inches ; tail 2*2 ; ear 1 ; 

 tragus 0*3 ; forearm 2"5 ; thumb 0*4 ; second finger — meta- 

 carpal bone 2*4, first phalanx 1*1, second phalanx 1%3 ; fourth 

 finger 2*4 ; tibia 0'75 ; foot and claws 0*45. 



This species resembles N. rnidas^ from North Africa, in size 

 and in general appearance. The large tragus, llo^vever, at 

 once distinguishes it from that species. 



Hab. South Africa (Transvaal Republic). Type in the col- 

 lection of the British Museum, presented by R. B. Sharpe, Esq. 



