CLASS REPTILIA. 



over the eyes ; sternum with four callosities, the ^ lateral 

 truncate on the inner hinder angles, and the hinder ovate- 

 triangular. India. 



Javan Tr'wnyx, Trionyoc Javanicun, Geoff. Ann. Mus. xiv. 

 t. Illust. Ind. Zool. t. 



Dull green, with numerous narrow lines of minute white 

 granular specks. Head green, with five or six diverging black 

 lines, and a streak between the eyes. Sternal callosities two, 

 linear, lateral. When young, back black ocellated. Java 

 and India. 



Flat Trionyx, Trionyoo Subplanus, Geoff. Ann. Mus. xiv. 

 Illust. Ind. ZooL t. 



Shield nearly flat ; front edge smooth ; sternum without any 

 callosities. India. 



Euphratic Trionyx. Triony-v Euphraticus, Geoff. Test. 

 Raschtf Oliv. Voy. t. 41. This needs a better description. 

 Euphrates. 



Margin of the shield with a series af small hones in front 

 and behind^ limbs covered, when withdrawn, by the valves 

 on the side of the sternum. Emyda. Gray. 



Punctuated Trionyx. Tri. (Emyda) Punctatus, Lacep. 

 Q. O. t. 7- f- 1- Schoepf. t. CO. A. B. Trionyx Coroman- 

 delicus, Geoff. Gray, Illust. Ind. Zool. t. 



Peep green, occiput white spotted ; sternum with seven 

 large callosities, the hinder of them united. India. 



N. B, — M. Cuvier informed me on his late visit to this 

 country that there has been lately received at the Paris 

 Museum a species of this genus, with 4 claws on each foot ; 

 it will form a section {Tetraonyai), and it may be indicated 

 by the name of Trionyx {Tetraonyx) Cuvieri. 



c 2 ' 19 



