HEPTILES OF BEITISn BIEMA. 17 



pale yellow superciliary streak from the snout, and another below 

 the eye. Colour of shell above pale greenish olive, each costal 

 plate with a dark spot in the centre, surrounded by a pale 

 areola. The vertebrals similarly ornamented posteriorly, and 

 obtusely keeled, particularly the three front plates, and more 

 prominently in young than old animals. Beneath uniform pale 

 yellow. 



a. Adult .... 9-50 

 8-75 

 7-75 



(710. Breadth of sternum.) 

 This species is extremely abundant in Pegu and Tenasaerim, 

 and is excellent eating. It is essentially aquatic, and closely allied 

 to JE. ocellata, D. et B., but is more globose than that species, 

 which it represents in Pegu, where JE. ocellata, D. et B., is not 

 found, whilst on the other hand B. Berdmorei, Blyth, is unknown 

 in JJcngal. Qiinther appears to have confounded tlie tvfo species ; 

 his own description of Etmjs ocellata, D. et B., being based on a 

 specimen of B. Berdmorei, Blyth, from Mergui. lie also remarks 

 that the figure in the JErpetologie g6n4rale is " not good " which of 

 course is explained by its referring to another species than the 

 one he was describing. In a * Catalogue of the Reptiles in the 

 Asiatic Society's Bluseum in Calcutta' (now^ publishing) I have 

 given a figure of each species, on one plate, for comparison *. 



TETRAOirrx, Lesson. 

 T. Lessoni, D. et B. 

 Batagur baska. Gray. 



Common in Pegu. A large specimen, in the Museum of the 

 Asiatic Society of Bengal, measures 



21-10 

 19-40 

 18 00 

 It is essentially herbivorous, and of very timid, inoffensive dis- 

 position compared with the Trionycida?, though it can bite severely 

 if provoked. 



Pi/ATYSTERNUM, Gray. 



P. MEGACEPHALUM, Grray. 



a. Very young. Shell 2 inches. Tail 2-25. 



* Fide p. 49. 

 LINN. PROC. — ZOOLOGY, VOL. X. 2 



