192 PELOMEDUSID ®. 
alveolar surface of upper jaw with a very indistinct median ridge ; 
a pair of shields, separated by a longitudinal suture, between the 
eyes, followed by a large parietal. Digits very short, the median 
with three phalanges; five claws to each foot. 
Tropical and South Africa; Madagascar. 
Fig. 46. 
Skull of Sternotherus niger. (From Gray, P. Z, 8. 1878.) 
Synopsis of the Species. 
I. Suture between the abdominal shields longer than that between 
the humerals ; front lobe of plastron strongly hinged. 
