112 Species of North American Tortoises. 



I. Testudo insculpta, l. e. 



Testa ovalis carinata, fusca, lineis flavis striisque radian- 

 tibus, quae striis concentricis intersecantur, 



Emys scahra, Say, loco citato. 



Shell oval, carinate, emarginate behinri, all the plates with 

 radiating lines of yellow and deeply radiating striae, which are 

 cut by other concentric striae. First vertebral plate pen- 

 tagonal, the second and third subhexagonal, the fourth heptago- 

 nal, very narrow behind, the fifth hexagonal, four of its faces 

 anterior : first lateral plate heptagonal, the second and third 

 quadrangular, the superior faces rather angled, the latter some- 

 what three-sided on the lower face, the fourth hexagonal : in- 

 termediate marginal plate small, oblong linear, the first pen- 

 tagonal, projecting a little beyond the next, the rest more or 

 less square or oblong, the ninth, tenth and eleventh each pro- 

 jecting beyond the preceding one, and sometimes revolute. — 

 Sternum emarginate behind, and with the marginal plates be- 

 neath yellow, all the plates marked with a large black spot and 

 with concentric striae ; scapular plates triangular, projecting 

 beyond the brachial at the exterior angle ; the rest quadran- 

 gular ; the femoral projecting beyond the caudal at the exte- 

 rior and posterior angle. Skin black : fore part of the throat 

 speckled with red, hind part red speckled with black, a Itne 

 which is yellow on the fore part and red on the hind, or altoge- 

 ther red or yellow, commences at the point of the chin, and 

 runs along each side of the throat : jaws horn colour, the up- 

 per one emarginate, the lower with a few brownish spots : 

 irids dark brown, pupil black, surrounded by a yellow ring. — 

 Legs and tail scaly ; feet palmate, five-toed ; claws 5-4. 



Plates of the margin twenty-five ; of the sternum twelve. 



