1873.] DR. J. E. GRAY ON THE TRIONYCHIDjE. 41 



Chitra. 



The skull is figured in the Cat. Sh. Rept. p. 70, t. 41 ; P. Z. S. 

 1864, p. 92, f. 1 1 & 12 ; and Suppl. Cat. Sh. Rept. fig. 28. 



1 . Chitra indica. (The Sewteree). 



Testudo chitra, B. Hamilton (Icon. ined.). 



Trionyx cegyptiacus, var. indicus, Gray, Illustr. Indian Zool. i. 

 t. 80, from Hardwicke's icon. 



Trionyx indicus, Gray, Syn. Rept. p. 47. 



Gymnopus lineatus, Dum. & Bibr. Erpet. Gen. ii. p. 491. 



Sewteree, Hardwicke (icones ined. B. M.). 



Chitra indica, Gray, Cat. Sh. Rept. B. M., p. 70, t. 41 (skull), 

 P. Z. S. 1 864, p. 92, figs. 1 1 & 1 2 (skull) ; Suppl. Cat. Sh. Rept. p. 89, 

 t. 28 (skull) ; Ann. & Mag. Nat. Hist. 1872, p. 332. 



Hab. India, Ganges, Nepal. 



Pelochelys. 



The skull figured, Gray, P. Z. S. 1864, p. 90, f. 9 & 10; Suppl. 

 Cat. Sh. Rept. p. 91, fig. 29. 



The odd bone in front of the disk very large and broad in the 

 adult. 



1. Pelochelys cantorii. 



Chitra indica, Blyth, J. A. Soc. 1863, xl. p. 77 ; Giinther, Rep. 

 Brit. Ind. t. (badly coloured). 



Gymnopus indicus, Cantor, Rept. Malacca, p. 10. 



Pelochelys cantorii, Gray, P. Z. S. 1864, p. 90, figs. 9, 10 (skull) ; 

 Suppl. Cat. Sh. Rept. p. 91, fig. 29 (skull). 



Hab. Malacca, Aracan. 



2. Pelochelys cumingii. 



Pelochelys cumingii, Gray, P. Z. S. 1864, p. 90 ; Suppl. Cat. Sh. 

 Rept. p. 91. 



Hab. Philippine Islands. 



3. Pelochelys bibronii. 



Trionyx bibronii, Owen, Cat. Osteol. Spec. Mus. Coll. Surg. p. 185, 

 nos. 951-959. 



Pelochelys bibronii, Gray, P. Z. S. 1864, p. 90; Suppl. Cat. Sh. 

 Rept. p. 9i. 



Hab. Australia ? 



II. Heptathyrina. The hinder lateral edge of the sternum with 



flaps to cover the hind limbs ; the front pair of bones of the 



sternum with callosities ; the front odd bone of the dorsal 



disk united to the ribs, without any small oval bone in the 



margin before it. 



Heptathyra. 



The skull figured, Gray. P. Z. S. 1864, p. 94, figs. 13, 14, 15 ; 

 Suppl. Cat. Sh. Rept. p. 92, fig. 30. 



