Dr. J. E. Gray on the Mud-Tortoises of India. 339 



DOGANIA. 



Dogania subjplana. 

 Trionyx subplanus, Geoflr. Ann. du Mus. iv. p. 15, tab. v. fig. 1 \ Cuvier, 



Oss. Foss. V. pt. 2, tab. xiii. fig. 5 (dorsal disk only) ; Gray, HI. Ind. 



Zool. tab. 

 Gymnopus sicbplanus, Dumeril & Bibron, Erpet. Gen. p. 492. 



General Hardwicke in his drawings figures the upper and 

 lower surfaces of a stuffed animal, which I believe he received 

 from Java, without a name. These figures are copied in the 

 ' Illustrations of Indian Zoology' under the name Trionyx 

 subplanus^ Geoffr. 



The specimen was young and had not the sternal callosities 

 developed. 



MM. Dumeril and Bibron, because the animal is figured by 

 Hardwicke, erroneously say it lives in the Ganges. 



This animal is not known in the adult state. The specimen 

 described as Sarhieria frenata (Suppl. Cat. Shield Kept.) is 

 evidently a specimen of this species approaching to maturity, 

 having four slightly developed callosities, as the specimen de- 

 scribed as Dogania Guntheri also has ; so that I have no doubt 

 that the adult animal has four well -developed callosities, and 

 the odd front bone united to the rest of the dorsal disk. 



** Sternal callosities two, lateral ; broad and well developed in the 



adult. 



Eafetus. 

 1. Rafetus ewphraticus^ Grray, Cat. Sh. Kept. p. 103. 



*** Sternal callosities two, lateral, narroiu, linear, on the suture 

 between the pair of lateral bones. 



ASPILUS. 



The front odd bone of the dorsal disk is small and smooth, 

 with a central rounded callosity in the adult. 



The palatine groove in Aspilus javanicus is moderately 

 narrow, rather deep, and of the same diameter through the 

 whole of its length. 



t Forehead with radiating black lines. 



1. Aspilus gataghol. (The Gataghol.) 



Testudo gatayhol, Hamilton, icon. ined. 



Trionyx jaoanictis, Gray, 111. Ind. Zool. tab, (copied from B. Hamilton). 



Hah. India. 



This mud-tortoise is very like Trionyx gangeticus with its 

 radiated head ; but Buchanan-Hamilton's figm-e shows only 

 two very narrow lateral callosities. I have never seen this 

 species. 



