22 ZOOLOGY OF THE VOYAGE OF THE SULPHUR. 



The Sturnira. — Sturnira spectrum. 



Plate VI. Fig. 1. 



Sturnira spectrum, Gray, Ann. and Hag. Nat. Hist. 1842. 257. List Mam. Brit. Mus. 18. 



Fur brown, with darker tips to the hairs; beneath pale whitish. Streak from the orbits to the 

 nose; the upper part of the fore-arm and sides of the body near the wings blackish. 

 Epaulet tuft large, bright yellow (in male?). The nose-leaf erect, lanceolate-ovate, about 

 as broad as high ; the lower lip with a flat triangular wart in front, surrounded by a series 

 of small roundish warts beneath, forming a broad triangular space. 



Inhab. Tropical America. 



The thumb is elongated, the ears moderate, acute at the tip, with an obscure 

 sinuation in the middle of the outer edge, and the lobule is indistinctly marked. 

 The tragus is moderate, triangular, acute, with a small tooth-like lobe on the 

 lower part of the outer side. 



The back is grey-brown, the hairs grey, with rufous brown tips. The head and 

 lower side of the body are rather paler, wanting the brown tips to the hairs ; the side 

 of the nose, upper part of the orbits, and side of the forehead to the base of the 

 ears are darker ; the longer hairs on the axilla and side of the body are blackish, 

 and there is a broad rather darker band from the axilla across the chest, and 

 another narrower one across the base of the thighs ; the tuft of long thicker 

 hairs on the side of the neck, between the ears and the base of the wings, is dark 

 golden yellow. The upper surface of the fore-arm and the lower half of the under 

 side, and both surfaces of the legs, are covered, and the under-side of the wings 

 near the axilla is furnished with scattered hair. 



Id. Lines. 

 Length of the body and head 3 6 



of the fore-arm bone 2 



Expanse of the wings 11 



Tribe — Noctilionina. 



For the purpose of showing the natural relations, and the distinctive char- 

 acters of the two new genera figured, it has been considered advisable to give the 

 following synopsis of the distribution of the genera referred to it, founded on an 

 examination of the extensive collection of species of Bats, especially of this 

 tribe, contained in the British Museum. 



The tribe is easily distinguished from the other Bats by the absence of any 



