Dr. J.E. Gray on the Box Tortoises. 109 
Cyclemys platynota, Gray, Cat. Shield Reptiles B.M. p. 43. 
Hab. Sumatra; Singapore (Wallace). 
The head with a pale streak on each side, extended down the 
upper part of the sides of the neck. 
The young specimens have one small black spot on the back edge 
of the areola of the costal, and two on the back edge of the areola of 
the vertebral plates. 
In the aberrant Cistudine the lobes are only moveable in the 
young state; the suture that divides the bones of the sternum 
into two parts is straight and transverse, while the front edge 
of the pair of ventral shields overlaps its edge and forms a sinuous 
line in front of the suture. The lobes of the sternum are narrower 
than the opening of the thorax, as in Hmys, and do not cover the 
legs when they are contracted. 
This genus forms the transition to the Tortoises with solid and 
fixed sternum; but it is easily known from them by the sternum 
being scarcely raised above the margin of the thorax, and by the 
existence of the cartilaginous sutures between the sternum and thorax. 
7. CYCLEMYS. 
The thorax convex or depressed. The sternum flat or slightly 
convex, with the lateral symphysis well marked, truncated before 
and notched behind ; the cross suture indistinctly marked and nar- 
row, more or less obliterated in the adult, covered with the produced 
front edge of the ventral shields. The legs covered with large, 
band-like, thin plates in front. The toes banded above; the front 
one short, webbed. The hind feet flattened, with the toes broadly 
webbed ; the hinder edge keeled and angularly produced. 
* Thorax depressed, suborbicular. 
1. CycLemys orBicuLaTa, Bell, P. Z. 8. 1834, p. 17. 
Cyclemys dentata (adult), Gray, Cat. Shield Reptiles B.M. p. 42, 
t. 19. 
Shields brown-rayed. 
Hab. Java. 
The small figure of Hmys dentata of my ‘ Illustrations of Indian 
Zoology’ represents, I think, probably the young of Geoémyda 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. 
