329 



with a longitudinal ridge. Tail very short. Limbs with three claws. 



Brown above; white below; head spotted or vermiculated 

 above with black. Length of disk 500 mm. 



Habitat: Sumatra (Deli, Muara Bukit Tinggi) ; Java (Buiten- 

 zorg!); Borneo (Akar river, Tandjong). Malay Peninsula; 

 Penang?; Tenasserim; Pegu; Burma. 



3. Trionyx cartilaginous (Bodd.). 



Testudo cartilaginea, Boddaert, Epistola ad W. Roell, 1770. 

 Trionyx cartilagineus, Boulenger, Cat. Chel. 1889, p. 253 (s. syn.). 

 Trionyx cartilaginous, Siebenrock, Zool. Jahrb. Suppl. X 1909, p. 599. 

 Trionyx cartilagineus, Annandale, Rec. Ind. Mus. VII part II 1912, p. 168. 

 Amyda cartilaginea, Barbour, Mem. Mus. Comp. Zool. Harv. Coll. XLIV 1912, 

 p. 144. 



Disk as long as broad or a little more long than broad; a single 

 neural between the first pair of costals; eight pair of costals, 

 last forming a suture ; plates coarse. Young specimens with longi- 



Fig. 127. Trionyx cartilaginetis (Bodd.). 



tudinal ridges of small tubercles on the dorsal skin. Epiplastra 

 in contact or narrowly separated; entoplastron forming an 

 obtuse or a straight angle ; callosities well developed, coarsely 

 sculptured, hyo-hypoplastral and xiphiplastral. Head moderate; 

 snout much longer than the diameter of the orbit; postorbital 



