422 



ElttBALLONtTKIDJ.. 



«"'. Ears separate. 

 a. Tragus quadrate, broad above ; fore- [p. 437. 



arm l"-7 18. JV. hrasUiensk, 



/3. Tragus triangular, narrow above ; fore- [p. 439. 



arm 1"'35 19. N. norfolcensis, 



II. Premolars ^z:^- 



c'. Antitragus separated by a very shallow notch ; 

 lower incisors 6. 

 d". Muzzle flat or rounded off above ; upper 

 lip with ill-defined vertical wrinkles. 

 /'". Ears separate ; tragus triangular, 

 rounded ofi^ above. 

 a. Ear broad above, upper third of the [p. 440. 



inner margin straight; forearm l"-45 20. N. alUventer, 

 0. Ear narrow above, upper third of the 



inner margin deeply concave ; fore- [p. 440. 



arm l"-55 21. N. acetabtdostis, 



2—9 



Premolars ^^ ; ears united or close together. (Subg. NYCTiNOMUS,Ptrs.) 



1. Nyctinomus africanus. 



Nyctinomus africanus, Dohson, Ann. ^ Mag. Nat. Hist. 1876, xvii. 

 p. 348; P. Z. & 1876, p. 719. 



Ears large, their inner margins arising from perfectly distinct 

 points of origin, though close together ; outer and inner margins of 

 the ear-conch regularly convex, forming an arc of a circle ; anti- 

 tragus irregularly quadrilateral, with a broad base, separated pos- 

 teriorly by a moderately deep notch, upper margin straight or even 

 slightly concave ; tragus broad, evenly rounded off above ; keel of the 

 ear very prominent, thickened and flattened esternaDy in lower third 

 (Plate XXII. fig. 1). 



Fur bright orange-chestnut, above and beneath. The fur of the 

 body extends upon the wing-membrane above almost as far as a line 

 drawn from the middle of the humerus to the knee, and iipon the 

 base of the interfemoral membrane, the remainder of the upper 

 surface is naked ; beneath, the fur scarcely extends so far outwards 

 upon the wing-membrane between the humerus and femur as upon 

 the upper surface, but a narrow band of short hairs passes outwards 

 behind the posterior margin of the forearm to the carpus. 



Lower incisors four, not crowded ; first upper premolar very short 

 and blunt, but occupying by its base the whole space between the 

 canine and second premolar. 



Length, head and body 3"*4, tail 2"'4, tail free from membrane 

 l"-o, head l"-2, ear 1", tragus 0"'3 X 0"-15, forearm 2"-5, thumb 

 0"-4; third finger— metacarp. 2"-4, 1st ph. 1"-1, 2nd ph. l"-3 ; 

 fourth finger — metacarp. 2"-15, 1st ph. 0"-9, 2nd ph. 0"-35 ; fifth 

 finger — metacarp. l"-25, 1st ph. 0"'75, 2nd ph. 0"-3; tibia 0"- 75, 

 foot 0"-45. 



Hah. South Africa (Transvaal Republic). 



«. ad. sk./al. (type). Transvaal, South Africa. R B. Sharps, Esq, [P.], 



