13. NTCTIN0MU8. 439 



o. ad. sk. Duenas, Guatemela. 0. Salvin, Esq. [P.]. 



p. ad. sk. Province of Conchagiia. 



q. c? imm., al. Costa Eica. Purchased. 



r. 5 ad., al. Jaciiman. G. E. Dob8on,M.B. 



s. ad. sk. Jamaica. Capt. Hamilton [P.' 



t. ad. sk. Jamaica. J. S. Redman, Esq. 



(Type of Nyctinotnus mttrinus, Gray.) 



u, V. (S ad., al. Hayti. J. Hearne, Esq. [P.]. 



w. 2 fid., al. Maldonado. C. Darwin, Esq. [P.]. 



-r. cJ ad., al. West Indies. Mr. Scrivener [C.]. 



y, s. ad. sk. Province of Santiago. Purchased. 



a', b'. 2 ad., al. Chili. Purchased. 



c'-f'. ad. sks. Chili. Purchased. 



</'. 2 ad., al. Chili. Purchased. 



h'. ad. sk. Chili. Purchased. 



ad. sk. 



19. Nyctinomus norfolcensis. 



Molossus norfolcensis, Oi-ay, Ann. Nat. Hist. iv. p. 7 (1839). 

 Nyctinomus planiceps, Peters, MB. Akad. Berl. 1866, p. 22. 

 Molossus wilcoxii, Krefft, List of Australian Bats (1871). 

 Nyctinomus norfolcensis, Dubson, P. Z. S. 1876, p. 732. 



Ears triangular, shorter than the head, separate, the inner margins 

 arising from distinct points of origin ; inner margin of the conch 

 almost straight, tip broadly rounded off, outer margin straight ; 

 antitragus scarcely distinguishable from the outer margin, a small 

 almost imperceptible shallow notch indicating its commencement ; 

 tragus triangular, rounded off above ; muzzle flat, obtuse ; the upper 

 lip with shallow vertical wrinkles ; nostrils opening sublateraUy. 

 Gular sac small, aperture circular, directed downwards ; quite rudi- 

 mentary in the female. 



Wings from the ankles ; the outer and inner toes equally enlarged. 



Fur reddish brown above, paler beneath ; base of the hairs much 

 lighter. Above, a broad band of very short fur covers the wings 

 behind the proximal four fifths of the forearm, but does not extend 

 to the carpus. 



Upper incisors long, widely separated at their bases, converging 

 inwards and forwards ; a blunt projection from the cingulum of 

 each posteriorly. First upper premolar small, but much larger than 

 in the other species of the genus, filling up the space between the 

 canine and second premolar. Lower incisors six, deeply bifid ; first 

 lower premolar small and acutely pointed, i'ffi inner side partly 

 covered by the expanded cingulum of the second premolar, as in 

 M. rufus ; second premolar double the size of the first, its cingulum 

 directed obliquely forwards and upwards *. 



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

 from membrane 0"-6, head 0"-8, ear 0"-6, tragus 0"-15x0"a, fore- 

 arm 1"*35, thumb 0"-26 ; third finger— metacarp. l"-3, 1st. ph. 

 0"-55, 2nd ph. 0"-7 ; fourth finger — metacarp. l"-25, 1st ph. 0"-45, 

 2nd ph. 0"-4 ; fifth finger — metacarii. 0"-9, 1st ph. 0"-35, 2nd ph. 

 0"-15; tibia 0"-4, foot 0"-3. 



* See remarks on the natural position of this species, pp. 441, 442, 



