1'6. NvuxiNoMus. 437 



at first sight, it appears to be a small variety of that species. On 

 closer examiaation, however, it is easily distinguished by the very 

 different form of the antitragus, and by the short connexion of the 

 ears in front. 



a. cS ad., al. San Geronimo. Purchased. 



o. ? ad., al. Ecuador. Mr. Fraser [C.]. 



c, d. (S ad., al. Dueiias, Guatemala. 0. Salvin, Esq. [C.]. 



IS. Nyetinomus brasiliensis. 



Nyctinomua brasiliensis, Is. Oeoffroij, Ann. des Sci. Nat. i. p. 337 



(1824) ; Gervais, Exp6d. du, Comte de Castehiau, Zoologie, p. 60, 



pi. xii. figs. 2 & 2 a (teeth) (1855) ; PeUrs, MB. Akad. Berl. 18G5, 



p. 573 ; Dohson, P. Z. S. 1876, p. 731. 

 Dysopes nasutus, Temminck, Monogr. Mammal, i. p. 234 (1827). 

 Nycticejus cynocephala, Le Conte, Cut: Anim. Kingdom, p. 431 



(McMurtrie ed.) (1831). 

 Nyetinomus niurinus, Gy-ai/, Mag. Zool. S,- Bot. ii. p. 601 (1838). 

 Nyetinomus multispinosus (Peak), Burmeisler (vide Peters, I. c. 



1865, p. 573). 

 Molossus cynocephalus et fuliginosus, Coopei-, Ann. New-York Lye. 



iy. 1837, pp. 65, 67. 

 Rhiuopoma carolinense, Gtmdlach, nee GeoiTrov, Wieam. ArcMv, 



1840, p. 368. V J> y 



Dysopes naso, Wagner, Suppl. Schreb. Sdugeth. i. p. 475 (1844). 

 Nyetinomus mexicanus, Saussure, Pev. et Mag. Zool. 1860, p. 283. 

 Molossus aztecus, Saussttre, I. c. p. 285. 

 Nyetinomus nasutus, Tomes, P. Z. S. 1861, p. 68 ; Allen, Monograph 



of the Bats of N. America, p. 7, figs. 6, 7 (1864). 

 Nyctiuomus musculus, Gundlach, MB. Akad. Bed. 1861, p. 149. 



Ears nearly as long as the head, laid forwards they extend almost 

 to the end of the nose ; inner margins not united, but arising close 

 together from the muzzle about midway between a line drawn 

 between the eyes and the extremity of the nose ; inner and outer 

 margins of the ear-conch almost regularly convex, continuous ; the 

 inner margin with five or six minute horny projections ; antitragus 

 but slightly developed, separated posteriorly by a shallow and small 

 notch ; tragus quadrate, larger than in N. gracilis (Plate XXII. 

 fig. 8). Upper Up with numerous vertical wrinkles ; muzzle flat 

 above, terminated by the sharply cut margins of the nostrils. No 

 gular sac in male or female. 



Wings from the distal third of the tibiae near the ankles. 

 Fur moderately long and very dense, extending upon the wings, 

 above and beneath, as far outwards as a line drawn from the middle 

 of the humerus to the knee, the remainder naked. 



Lower incisors six, crowded, the outer incisors very slender, over- 

 lapping the external margins of the middle incisors, the internal 

 margins of which are also overlapped by the central incisors ; first 

 upper premolar small, with an acute cusp well elevated above the 

 gum in the centre of the small space between the canine and second 

 premolar. 



Length (of an adidt $ ), head and body 2"-25, tail l"-4, tail free 



