1869. ] DR. J. E. GRAY ON THE TORTOISES. 201 
Fig. 12. 
Kachuga pequensis. Two-thirds nat. size. 
plates behind them. The lower jaw with a distinct sharp- 
edged short longitudinal central ridge just between the back 
edge of the conical marginal prominences and the middle of the 
diverging ridges, and a deep ovate longitudinal concavity be- 
hind the middle of those ridges: the lower jaw with a slightly 
shelving plate for the support of the diverging dental ridges. 
The palate narrow, rather concave, with a very deep oblong 
