292 Dr. J. E, Gray on Chelonians. 



shell of a rather larger specimen without any habitat, but most 

 likely from Xanthus. These four have the caudal plate with- 

 out any central groove. There is another specimen very like 

 the others, but rather older, with the caudal plate divided by 

 a deep longitudinal central groove. 



Chersina angulata. 



A specimen in the Museum, of a large size (nearly 7 inches 

 long), has the gular plate very much produced. The hinder 

 half of the sternum is rather concave, the anal notch broad ; 

 and the caudal plate is very convex, broad, and with the lower 

 margin inflexed. Male? 



We have a specimen, about the same size, with a perfectly 

 flat sternum rather more raised on the side, and a narrower, 

 scarcely convex dorsal. It was probably a female. 



Kinixys BelUana. 



There are four specimens of the animal and shell of this 

 tortoise. 



One (a) has five well-developed front claws ; and two 

 others {h & e) have only four front claws, and no appear- 

 ance of the fifth. In other respects the animals and shells 

 are similar. 



The sternum of most of the specimens is quite flat the whole 

 length, and the caudal plates similar and not inflexed ; so that 

 perhaps the sexes do not differ in this species. In the smaller 

 specimen (/"), called K. Sjtekei, the sternum is slightly con- 

 cave between the abdominal plates. In the ' Suppl. Cat. Shield 

 Eept.,' p. 14, this specimen is compared, by slip of the pen, 

 to K. Homeana instead of K. BeUiana. Sternum in two 

 specimens received from Abyssinia concave, one very much 

 and deeply so. 



A young specimen in the British Museum (from Mr. 

 Bartlett's collection), about 2 inches long, has the first verte- 

 bral plate broader than long — the second about the same length 

 and much broader, being the broadest of the series — the third 

 shorter and narrower, especially the hinder part — the fifth 

 narrower and shorter still. The third costal plate on each side 

 shows a distinct suture obliquely across it, being nearer the 

 front margin of the outer than the inner side. 



Fifth lateral marginal plate sometimes produced more or 

 less between the suture of the first and second costal ones ; it 

 is most produced in the young specimen which has been called 

 K. Speheij and which is peculiar for being pale with a square 

 black areola. 



