28 ZOOLOGY OF THE VOYAGE OF THE SULrilUR. 



and below in a slight acute tip, each surrounded on the outer side by a half-ovate 

 raised edge, bent in towards the tubercle at the tip, and bent outwards on the 

 edge of the lip, having two tubercles on the upper part of the outer edge, each 

 furnished with a single bristle, and giving off a slight curved process on the 

 middle of the upper edge, and each ending in a small tubercle bearing a similar 

 bristle. The eyes are surrounded with a raised ridge, bearing two or three 

 similar bristle-bearing tubercles ; the ridge from the upper edge of the eye-lid is 

 extended towards the middle of the face, and is then sharply turned up at an 

 angle before it reaches the central line, and after a short space bent round at top 

 towards the outer edge of the front of the two lunate cross ridges on the forehead ; 

 behind the larger upper cross ridge on the forehead is a slight cross fold with a 

 swollen hinder edge; the upper edge of these ridges, and the tip of the lobule of 

 the ear is dark brown and callous. The chin projects beyond the mouth, and is 

 keeled below ; the cheeks, chin, and throat are covered with various symmetrical 

 wrinkles, and on the middle of the chin is a rather broad, and on the top of the 

 ridge on each side of the chin is a narrow, horny plate. 



Captain Sir Edward Belcher informed me that this Bat was found in 

 Amboyna ; but Mr. Hinds does not appear to be confident on the subject, 

 and rather suspects it came from South America. It was taken from a bottle 

 containing animals from both countries. It is much to be desired that in expe- 

 ditions the simple plan of numbering all the specimens, and recording the habits 

 and locality in the Journal, so successfully practised by Mr. Darwin, should be 

 adopted, as the possession of the true locality of the specimens renders those 

 collected by private individuals, whose accuracy can be depended on, so much 

 more valuable than the specimens procured through dealers, who often have an 

 interest in mystifying their history. 



Tribe — Pteropina. 



As it has been thought advisable to form a sub-genus for one of the species of 

 this Tribe, brought home by the officers of this Surveying Voyage, the following 

 synopsis of the genera of the tribe has been given, to show how the new one is 

 separated from them, and its position and affinities determined. 



I. Wings from the side of the back. Head very long, tapering. Tail none. 

 Macroglossus, F. Cuv. — Lower joint of the thumb elongate. Wings on the 



back of the feet, to the base of the toes. 



II. Wings from the side of the back. Head elongate. Index finger clawed. 

 Pteropus, Geoff. — Tail none. Lower joint of thumb very short. 



