20 



ZOOLOGY OF THE VOYAGE OF THE SULPHUR. 



back elongate, brown, pure wbite at the base; of the undersides uniform grey- 

 brown the whole of their length ; the membranes are dark-brown, more trans- 

 parent, and thin near the bones of the legs. 



In. Lin. 

 Length of the body and head 2 



fore-arm bone 1 2 



shin bone 6 



feet 4 



In. Lin. 

 Length of the heel bone 4£ 



thumb 4 



nose-leaf 4 



The great difficulty that is generally experienced in distinguishing the 

 species of this genus, induces me to give the following table of the distribution of 

 the species which are contained in the British Museum collection, which also 

 shows, at one view, the means by which the species now described differs from its 

 congeners. 



A. Front of the lower lip with a large triangular space, with a central wart, 

 surrounded by one or two series of smaller warts. P. hastalum, P.fuliginosum, 

 P. Childreni, P. soricinum, P. lanceolatum. 



B. Front of the lower lip with a large triangular space, divided by a central 

 groove, the lower joint of thumb longest. P. elongatum. 



C. Front of the lower lip with a small triangular space, divided by a central 

 groove. P. Bennettii. 



The Large Tragus Carollia. — Carollia verrucata. 



Plate VIII. fig. 3.— Head. 



Arctibeus verrucatus, Gray, List Mam. Brit. Mus. 19. 



Fur sooty-brown, above and below. Ears rather large, ovate, rather acute. Tragus moderate, 

 ovate, trigonal, acute, with a slight notch on the outer side near the top, and contracted 

 at the base. Nose-leaf ovate-lanceolate. 



Inhab. Tropical America. 



This species agrees, in general colouring, with the only hitherto known species 

 of the genus, C. hrachyotis (Pr. Max. Abbild.), but differs from it in having con- 

 siderably larger ears, and an ovate triangular, acute-tipped tragus ;— while Prince 

 Maximilian of Neuwied, describes and figures his species as having " short, 

 broad ears, a very small tragus, with a strongly rounded tip." 



