56 DR. J. E. GRAY ON THE TRIONYCHIDjE. [JaD. 7, 



Aspilusl ornatus, Gray, P. Z. S. 1864, p. 85 ; Suppl. Cat. Sh. 

 Rept. p. 103 (part). 



Hab. Camboja (Moahot). Two specimens in the British Mu- 

 seum. 



The specimens are without distinct sternal callosities ; but the 

 V-shaped front bone, the large triangular anal bones, and the lateral 

 bones are seen through the skin, apparently indicating four sternal 

 callosities, and probably the roughness of the surface of the V-bone, 

 which is found in the species of Landemania ; but it is very desirable 

 to obtain adult specimens. 



The skull of the young specimen is short and broad, with the nose 

 shelving down rapidly in front ; the orbits are very large, more than 

 three times the length of the nose in diameter ; the space between 

 the eyes is very narrow ; the palate has a rather broad and deep 

 groove in front, rather wider behind ; alveolar process broad. 

 Lower jaw moderate, concave in front, with a sharp edge before and 

 on the sides ; sides much narrower, slightly concave behind, with a 

 raised edge on the inner side. 



7. DOGANIA. 



Dogania, Grav, P. Z. S. 1864, p. 82; Suppl. Cat. Sh. Rept. p. 106, 

 fig. 36 (skull). " 



Sarbieria, Gray, P. Z. S. 1869, pp. 212-220; Suppl. Cat. Sh. 

 Rept. p. 100 (adult). 



Skull tapering in front. Nose very short ; space between the 

 square nose-hole and the orbit less than half the diameter of the 

 latter ; internal nostril opening halfway between the front, and in a 

 line with the front of the zygomatic cavity ; palate short, the space 

 between the front and the front end of inner nostrils broad, concave, 

 rather deep, and scarcely narrower behind. Lower jaw with a mode- 

 rately broad alveolar surface, the front end deeply concave, leaving a 

 sharp edge ; the hinder part flattened, very slightly concave, narrow 

 in front, and gradually wider behind. Length to condyle 2\ inches ; 

 breadth at ears \\ inch. (Fig. 8, p. 57.) 



When describing the genus Sarbieria, I observed that it was in 

 many respects allied to Dogania, but it appeared to have four callo- 

 sities. " The upper surface of the beak is concave, narrow in front, 

 and wider behind ; but it is difficult to compare a head with the beak 

 on with a prepared skull without a beak." When the skull was 

 extracted it was found to be exactly like Dogania. 



It is remarkable that of this Tortoise, which is sold in the markets, 

 and is much esteemed for its flesh in Singapore, I have never seen, 

 and do not believe that there is in Europe, an adult specimen. 



Probably in this species the callosity and pits are developed later 

 than is usual in the other kinds of the family. 



The young specimens in the Museum have the odd or single bone 

 of the back quite separate from the dilated ribs, as in the other young 

 Mud-tortoises ; and the surface is without any rugosity, or only shows 

 obscure indications that it may become callous and pitted. In the 

 specimen described as Dogania gilntheri, which may be a small spe- 



