CLASS REPTILIA. 



Species of America. 



Flat Headed Chelys. Ch. (Hydrastis) Planiceps. Test. 



PUnicevs. or T. Platycephala. Sclin. Berb. Naturf. t. 



16. T.Martinella, Cuv. R. A. Emys Discolor, Thumb. 



E.Caniculata? Spix, t. 8. E. Carunmlata, Cuy.B.. A. 



Emys Geoffroyana, Schw. 

 SheU oblong, flattened, black brown, centre concave ; nu- 

 chal plate narrow; sternum yellow edged. E. Jspera, 

 Cuv. R.A. is a variety with larger warts in the neck. 



Depressed Chelys. Ch. (Hydraspis) Depressa, Gray. Test 



Depressus. Pr. Max. t. not Spix. 

 Shell eUiptical, pale brown, black rayed ; nuchal plates 

 narrow ; head and neck black spotted. Brazils. 



Radiated Chelys. Ch. (Hydraspis) Radi^lata, Gray. Emys. 

 Radiolata, Mikan. Pr. Max. T. Depressa, Spix, t. 3. i. 12. 



Shell oval, slightly narrowed before, yellowish, black rayed ; 

 nuchal plate distinct ; neck beneath yellow, eyelids streaked. 

 Brazils. 



Red Footed Chelys. Ch. (Hydraspis) Rufipes, Gray, 



Spix, t. 6, Jun. Emys Stenops, Spix, t. 9, f- 3, 4. 

 Shell elliptical, keeled in front, brown, beneath yellowish; 

 nuchal shield linear ; head and neck thick, oHve brown, 

 beneath yellowish. South America. 



Green Chelys. Ch. (Hydraspis) nridis. Gray. Emys Viri- 



dis, Spix, t. 2, f. 4. ; t. 3,f.l. 

 Shell elliptical, olive green, brown dotted; nuchal shield 

 linear ; intergular shield large, cordate. Brazils. 

 J6 



