326 



I. Dogania Gray. 



(Gray, Cat. Tort. p. 49, 1844). 



Orbits nearer the temporal than the nasal fossa; postorbital 

 arch narrow, forming a keel exteriorly; bony choanae between 

 the orbits; jaws strong. Eight neurals, separating all the 8 pair 

 of costal shields. Plastral callosities absent or feebly developed ; 

 no median continuation of the hypoplastron. 



Distribution. Malay Peninsula; Sumatra; Natuna Islands; 

 Borneo; Java; Philippines. 



A single species. 



I. Dogania subplana (Geoffr.). 



Trionyx subplanus^ Geoffroy, Ann. Mus. Paris XIV 1809, p. 11, pi. V fig. 2. 

 Trionyx subplamis^ Boulenger, Cat. Chel. 1889, p. 246 (s. syn.). 

 Trionyx pecki^ Bartlett, Sarawak Gazette i Febr. 1895, p. 30. 

 Dogania subplana^ Siebenrock, Zool. Jahrb. Suppl. X 1909, p. 606. 

 Dogania subplana^ Annandale, Rec. Ind. Mus. VII part II 1912, p. 154. 



Dorsal disk flat, oval; a large fontanelle between the nuchal 



and dorsal plates; eight 

 costals on each side, sep- 

 arated from one another 

 by the neurals; a single 

 neural between the first 

 pair of costals; the plates 

 finely granulate and ver- 

 miculate. Dorsal skin in 

 young specimens with 

 interrupted longitudinal 

 lines. Epiplastra long, 

 separated in the middle; 

 entoplastron forming a 

 straight or an obtuse 

 angle; callosities usually 

 present on the hyo-, hypo- 

 and xiphiplastra. Head 

 very large ; proboscis 

 long; mandibular sym- 

 physis narrower than the 

 diameter of the orbit, 

 without median 

 Tail very short. Limbs with three claws. 



Fig. 126. Dogania subplana (Geoffr.). 

 Young specimen, X '/e- 



ridge. 



