14 MB. AV. THEOBALB, OUN., ON THE 



those from Birma or Ceylon. One Madras specimen had no 

 nuchal plate, which was, of course, a mere individual peculiarity. 



E. CEASSICOLLIS, Bell. . , 



E. nigra, Blyth, J. A. S. xxiv, 713. 



a. Old animal 7*60 



6-60 

 5-50 

 Colour deep clouded olive-brown, tending to blackish above ; 

 and below, without marldngs, but paler here and there. Nuchal 

 very minute, triangular, witli the base in front. First vertebral 

 5-sided, very elongate, truncate behind. Second, third, and fourth 

 vertebrals 4-8ided, mushroom-shaped. Fi-ont side semicircular, as 

 long as a side and base. Base very narrow. In young specimens 

 tlie vertebrals are lozenge-shaped, quite unlike the mushroom- 

 sliapo they assume in the adult. Young three-keeled. 



This species is pretty common in the Tenasserim valley ; but it 

 is not, I think, quite certain that it is not a closely allied species 

 to jEJ. erassicoUis ; in which case Blyth's name, i'. nigrUj must be 

 adopted. 



Batagur, Omy. 



B. TEIYITTATA, D. ot B. 



a. Adult male 20'40 



18-25 

 16-60 

 A luichal phite always present. 



Animal pale yellow, with upper surface of limbs du.sky. Neck 

 yellow. Head covered witli a smooili vascular skin, when alive 

 of a deep llesh-red or carnation tint, but instantly fading on death 

 to a waxy white. Behind tlie nostrils, on the forehead, a black 

 lozenge-shaped plate, elongate behind. Shell above pale olive- 

 green, with three conspicuous pitchy -black bands down the back 

 (sometimes united at their ends), with some black marks about 

 the margin. Beneatli pale orange-yellow. Iris straw-coloured, 

 blotched with reddish orange. 



I. Adult female . . . .23-40 



21-60 

 21-40 

 Animal uniform greenish olive, Avith a lozenge-shaped plate on 

 the forehead, as in the male^ but without any of the naked vascular 



