| OCR Text |
Show 1873.] DR. J. E. GRAY ON THE TRIONYCHlDcE. 59 Trionyx georgicus, Geoffr. Ann. Mus. iv. p. 7 (from Pennant). Trionyx ferox, Leconte, Ann. Lye. N . York, 1830, iii. p. 393. La Molle, Lacepede, Qu. Ov. et Serp. i. p. 137, t. 7 (from Pennant). Gymnopus spiniferus (part), Dumeril et Bibr. Erpet. Gen. ii. p. 477. Aspidonectes ferox, Wagl. Syst. t. 2. figs. 34 & 35. Platypeltis ferox, Fitz. Rept. p. 30 ; Gray, P. Z. S. 1869, p. 214 ; Suppl. Cat. Sh. Rept. p. 107 ; Agassiz, Contrib. t. 6, fig. 3 (young). Trionyx frenatus, a, Gray, Cat. Sh. Rept. p. 67 (young). Gymnopus javanicus, Bibr. M S S . Mus. Zool. Soc. Fig. 9. Platypeltis ferox. The skull of a young specimen received from the Zoological Society has the head depressed ; nose tapering in front; nose-hole large, wider behind, with the upper edge prominent in the middle ; distance between the nose-hole and the orbit £ the diameter of the latter ; orbits large, close together ; alveolar surface narrow in front, |
