200 DR. J, E. GRAY ON THE TORTOISES. [Mar. 1], 
Tribe V. BATAGURINA. 
16. TETRAONYX. 
Trerraonyx BASKA. (Fig. 11, p. 199.) 
Batagur baska, Gray, Cat. Shield Rept. p. 35. Skull B.M. 
17. KacuuGa. 
* The upper jaw with a short very distinct central longitudinal 
dentated ridge behind the deep conical pit in the front of the 
jiw, which commences between the ends of the secondary ridges. 
The lower jaw with a deep longitudinal groove in front behind 
the central conical prominence on the edge. 
+ Palate flat, with two very deep oblong concavities, one behind 
each of the internal nostrils. The ridges of the upper jaw are 
elongate, and the anterior central ridge is broad at the base, 
with a deep broad concavity on each side between the sphenoid 
and condyle. The inner surface of the front part of the lower 
jaw is erect, without any expanded plate. BAaTAGURELLA, 
1. KacuuGa PEGuUENSIS. (Fig. 12, p. 201.) 
The concavities behind the internal nasals as broad behind as in 
front ; orbit large, irregular, oblong, nearly as high as long in front. 
Hab. India. Presented by W. Theobald, Esq. 
The thorax is unknown. 
++ Palate narrow, concave, with a ridge on each side and two mo- 
derately deep concavities behind each internal nostril, each 
marked with a central longitudinal ridge. The ridges on the 
upper jaw short, and the anterior central ridge narrow and 
sharp-edged. The front part of the lower surface of the tem- 
poral bone, between the condyle and sphenoid, shelves upward, 
not forming a broad cavity. The inner surfaces of the front 
part of the lower jaw have a shelving plate for the support of 
the inner longitudinal ridge on the upper dental surface. The 
orbit regular, oblong, moderate. The thorax is unknown. 
KacuuGa. 
2. KacuuGa TRiInineATa, Theobald. (Fig. 13, p. 202.) 
The concavities behind the internal nostrils oblong elongate, 
narrow, narrower and deeper behind; orbits very large, regular 
oblong, much longer than high. 
Hab. India. Skull Brit. Mus. 
3. KacnuGa oLpHAMI. (Fig. 14, p. 203.) 
Hab. India. Presented by Prof. Oldham. 
** The upper jaw with a notch between the two divergent ridges, 
and an indistinct broad longitudinal ridge in the centre of the 
