46 PLATYSTERNIDE. 
therefore develops no buttresses ; the entoplastron ends in a short 
acute process. 
1, Platysternum megacephalum. 
Fig. 13. 
Skull of Platysternum megacephalum. 
Platysternon megacephalum, Gray, 7. e. p. 107, and Ill. Ind. Zool. 
i. pl. lxii. (1834); Dum. § Bibr. p. 344, pl. xvi. fig. 2; Gray, Cat. 
Tort. p. 85, and Sh. Rept. i. p. 49; Giinth. Rept. Brit. Ind. p. 43 
(1864); Theob. Journ, Linn. Soc. x. p. 17 (1868) ; Bouleng. Ann. 
&§& Mag. N. H. (5) xix. p. 461, pls. xvi. & xvii. (1887). 
Fmys megacephala, Schley. Faun. Japon., Rept. p. 49 (1858). 
Platysternon peguense, Gray, Suppl. Cat. Sh. Rept, 1. p. 70 (1870). 
