40 REPTILES. 



Shell oval oblong, rounded at each end, not keeled, olive brown, 

 black-rayed, hinder margin yellow ; blackish gray, side of the head 

 with three black rays, throat whitish, black-spotted. 



a. Young, in spirits. S.America. Presented by Dr. Edw. Ruppell. 



The Black Hydraspis. Hydraspis gibba, Emys gibba, 

 Schiveig. Prod. 299, n. 7. Wagler, Syst. 135. Dum. et Bib. E. G. 

 ii.416, t. 20, f. 2. Hyd. cayennensis, 0. Gray, Syn. 42. 



Shell black, ovoid; discal plates slightly striated, the three last 

 vertebral tubercularly keeled behind ; costals flat ; sternum brown, 

 varied with yellow on the edge ; head covered with many small 

 plates. 

 a. Animal and shell. " Madagascar ? " From M. Parzudaski's 



collection. 



Schweiger's Hydraspis. Hydraspis nasuta. Emys nasuta, 

 Schweig. Prod. 298, n. 4. Platemys Schweigerii, Dum. et Bib. 

 E. Gen. ii. 435. E. platycephala, var. Schlegel, F. Jap. 46. 



Shell much depressed, keeled, waved, fulvous, hinder edge yel- 

 low ; sternum brown, with the sides and ends yellow ; head de- 

 pressed, thick, covered with numerous small plates. 



Inhab. S. America. 



Wagler's Hydraspis. Hydraspis Wagleri. Platemys Wag- 

 leri, Dum. et Bib. E. G. ii. 422. 



Shell oval, much elongated, narrowed at each end, keelless, 

 rounded in front and truncated behind, reddish brown ; shields 

 smooth ; the first vertebral protuberant, 3-sided ; sternum yellow ; 

 head flat, smooth ; temple with small scales. 



Inhab. Brazil. Mus. Paris, (I specimen). 



Gaudichaud's Hydraspis. Hydraspis Gaudichaudii. Plat- 

 emys Gaudichaudii, Dum. et Bib. E. G. ii. 427. 



Shell oval, oblong, truncated in front, rounded behind, keel- 

 less, brown marbled with black, and with yellow spots on the outer 

 edge of each marginal shield ; sternum black in the middle, orange 

 on the sides ; head large ; under part of the neck orange, marbled 

 with brown. 



Inhabits Brazils. Mus. Paris, (one very young specimen). 



St. Hilaire's Hydraspis. Hydraspis Hilairii. Platemys 

 Hilairii, Dum. et Bib. E. G. ii. 429. 



Shell rather convex, pale brown, short, oval, narrowed at each 

 end ; shields smooth ; vertebral broad, each furnished with a keel- 

 like tubercle; sternum yellow, black-spotted; head depressed, 

 sub-squamose, muzzle short, round. 



Inhab. Brazils. Mus. Paris. 



