178 DR. J. E. GRAY ON THE BOX TORTOISES. [May 12, 



* Thorax depressed, suborbicular. 



1. Cyclemys oRBicuLATA, Bell, P. Z. S. 1834, p. 17. 



Cydeinys dentata (adult). Gray, Cat. Shield Reptiles B.M. p. 42, 

 t. 19. 



Shields brown-rayed. 



Hab. Java. 



The small figure of Emys dentata of my ' Illustrations of Indian 

 Zoology' represents, I think, probably the young of Geoemyda gran- 

 dis. Gray (Ann. & Mag. N. H. 1860), judging by the series of spe- 

 cimens brought by M. Mouhot from Camboja. • The larger figures 

 are those of a young Batagur. 



** Thorax oblong, convex. 



2. Cyclemys oldhamii. 



Thorax oblong, convex ; back flattened, bluntly keeled, and with 

 a convexity in front, and two acute prominences at the end of the 

 two last vertebral shields ; costal plates rather convex, with the 

 areola on the upper hinder margin ; shields concentrically striated, 

 brown, with some black lines on the part of the costal shield near 

 the lateral keels ; margin toothed behind. Thorax flat ; shields pale, 

 with dark rays. 



Cestudo dentata (adult). Gray, P. Z. S. 1857, p. 183 ; Bell, Tes- 

 tudinata, t. (with animal) ? 



Hab. Mergui {Professor Oldham) ; Siam (M. Mouhot). 



I was formerly inclined to believe this was an adult of the former 

 species ; but we have lately received a second specimen, which proves 

 that it is perfectly distinct. 



3. Cyclemys ovata. 



Thorax ovate, grey-brown, convex, hinder edge acutely dentated ; 

 the middle of the back rather flattened, bluntly keeled in front and 

 above, and acutely keeled on the shelving hinder parts ; the side 

 shelving, the front slightly and the hinder part rather deeply im- 

 pressed ; the upper part of the costal plates convex ; the sternum 

 pale grey-brown. 



Hab. Sarawak {Wallace, no. 138). 



The specimen is not in a good state ; probably the animal had 

 been in confinement and was out of health ; the cross suture on the 

 sternum is much eroded on the edge, and the shell seems to be dis- 

 coloured. 



There is a second specimen, which was presented to the British 

 Museum by Sir Andrew Smith, C.B., without any habitat, which is 

 perhaps a younger stage of the species ; but it does not show any 

 mark of the transverse suture on the sternum, and the marginal 

 j)lates are all broad and equally so, while, in the specimen from 

 Borneo, the fourth, fifth, and sixth lateral marginal plates are much 



