CLASS REPTILIA. 



Ornamented Terrapin. Emys Ornata, Gray. 



Shell oblong, longitudinally rugose olive ; vertebral shields, 

 irregularly ringed ; beneath, pale yellow, with an irregular 

 black band down the centre, and on each side, and squarish- 

 eyed spots on the suture of the marginal shields. South 

 America. Young, beautifully orange and green-ringed. 



Rugose Terrapin. Emys Rugosa. Test. Rugosa, Shaw, 



Zool. t. 



Shell oblong, rugulose ; black, with yellow lines and dots ; 

 beneath yellow with black dots and lines ; Var. /3 shell livid, 

 black dotted. North America. 



Lake Erie Terrapin. Emys Lesueurii, Gray, Syn. Rept. 



Shell oval, smooth, tuberculately keeled ; behind, toothed ; 

 olive, with anastamosing black-edged pale lines ; beneath, 

 yellow, shields, black edged, margin, black ringed ; head, 

 yellow lined. /3 Emys Geographica, Lesueur, Jour. Acad. 

 N. Philad. t. North America. 



Bell's Terrapin. Emys Bellii, Gray, Syn. Rept. 



Shell oblong ; dorsal line, depressed ; olive, netted with 

 green and black dots ; beneath blackish, yellow dotted, sur- 

 rounded by an irregular yellow margin. 



White Spotted Terrapin. Emys Kinosternoides, Gray, 

 Syn. Rept. 



Shell oblong, pale brown, with black-edged white keel, and 

 side-spots, and with a dentated white edge ; beneath yellow 

 spotted ; sternum rounded at both ends. ( ?) 



Ring-hearing Terrapin. Emys Annulifera, Gray, Syn. 



Rept. 



Shell oblong, depressed ; pale brown, yellow lined with 

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