608 Catalogue of Reptiles inhabiting the [July, 



ed, pale brown, bluntly keeled, with a distinct spine in the areola of 

 each discal plate. 



Habit. — Pinang Hills. 

 Sumatra. 

 Two individuals were observed by the Hon'ble Sir William Norris, 

 late Recorder of H. M. Court of Judicature in the Straits of Malacca, 

 on the Great Hill at Pinang, at a distance from water. The colour of 

 the shell is a dirty brownish ochre, here and there with sooty rays, 

 which numerously intersect the concave sternum. The keel, the mar- 

 ginal spines, and the costal tubercles are nearly obliterated, and the 

 shell presents frequent marks of corrosion. The larger individual is of 

 the following dimensions : — 



Length of the head, If inch. 



Ditto ditto neck, If 



Ditto ditto shell, 8 



Ditto ditto tail,... If 



A large tick was firmly adhering to the throat of one of these 

 tortoises, the presence of which however does not indicate an exclusive- 

 ly terrestrial life, as one species at least of the Ricinioe (Ixodes ophio- 

 philus, Muller ?) occurs on aquatic as well as terrestrial serpents. The 

 following are the characters of Ixodes geoemydoz. The short sucker 

 is depressed, slightly widening towards the bifid apex, and encased by 

 the palpi. Above, and at a short distance from the latter, are two 

 minute rounded fossse. The cephalic, tetragonal plate is of a reddish 

 brown colour, with a yellow spot at the posterior angle. The oval body 

 is dark pearl- coloured. On each side close to the articulation of the 

 posterior leg appears a small rounded horny plate. The legs are red- 

 dish brown with a yellow spot at each of the joints, except the last. 

 Swollen, as the tick appeared, it measured six-eights of an inch in 

 length ; half an inch in breadth. 



Gen. Emys, Brogniart. 

 Head moderate, covered with a thin hard skin ; chin not bearded. 

 Feet short, covered with scales ; toes 5-4, strong, shielded above, 

 webbed to the claws. Tail moderate. Shell depressed. Sternum solid, 

 broad, truncated before, notched behind, affixed to the thorax by a bony 

 symphysis, covered by the ends of the pectoral and abdominal plates ; 

 axillary and inguinal plates moderate, distinct. 



