420 EMBALLONURID.E. 



13. NYCTINOMUS. 



Nyctinomus, Geoffroy, Descript. de VEgypte, ii. p. 114 (1812); 



lioi-sfield, Zool. Researches in Java ; Gray, May. Zool. ^ Bot. ii. 



(1838) p. 500; Peters, MB. Akad. Bert 1865, p. 573; Dobsm, 



P. Z. S. 1876, p. 716. 

 Dinops, Savi, Nuov. Giorn. de' Lett. p. 230 (1825) ; Bullet, des Scien. 



Nat. viii. p. 286 (1826). 

 Dj'sopes, Cretzsehmar (non Illiger), Biippell, Atlas Seise nordl, 



Afrika, Zoolog. (1826) p. 69 ; Temminck (in part), Monogr. 



Mammal, i. p. 226 (1835-41). 



Ears united on tlie muzzle, or close together by the bases of their 

 inner margins ; tragus short, quadrate or rounded off above, never 

 linear; extremity of the muzzle broad, very obliquely truncated, 

 projecting considerably beyond the lower lip, terminated by the 

 sharply cut margin of the nostrils ; upper lip very expansible, gene- 

 rally deeply grooved with vertical wrinkles ; wings and feet as in 

 Molossus. 



n .-. • T 2 2 1—1 2—2 1—1 3—3 



Dentition. Inc. g or j, c. ^i^, pm. ^ng or 2^, ni- snj- 

 PremaxiUary bones separate in front, or conjoined by cartilage 

 only ; upper incisors close to the canines by their bases, separate in 

 front, their cusps converging inwards and forwards. 



Range. Generally distributed throughout the tropical and wanner 

 parts of the temperate zones of both hemispheres. 



Synopsis of the Species. 



I. Premolars juj- 



a. Integument of the ears thick, opaque ; keel of 



the ear-conch thickened in lower third ; anti- 



tragus separated by a deep notch. 



a'. Lips smooth ; inner margin.s of the ears 



arising from the muzzle by distinct points 



of origin ; tragus broad, rounded ofFaJbove. 



u. Antitragus irregularly quadrate ; fore- [p. 422. 



arm 2"'5 ; lower incisors 4 1. N. africanus, 



b'. Lips furrowed by deep vertical wrinkles. 



a". Ears separate or conjoined at the bases of 



their inner margins only ; tragus broad, 



rounded off above. 



a'"- Ears conjoined at the bases of their 



inner margins ; gular sac distinct in (} . 



/3. Antitragus obliquely triangular, 



rounded ; forearm 2"'4 ; lower in- [p. 423. 



cisors 6 2. N. cestonii, 



V". Ears separate ; no gular sac. 

 y. Antitragus half-oval. [p. 424. 



a". Forearm l"-95 ; lower incisors 4 . . 3. N. cegyptiacus, 

 /3'. Forearm 2" ; lower incisors 6 . . . . 4. A^. tragatus, 

 V'. Ears conjoined by a more or less deep [p. 424, 



band ; tragus small ; no gular sac. 



