644 Notices and Descriptions of various Beptiles. [No. 7. 



half than broad, with the keel quite obsolete on the anterior half, 

 and flat and but little raised posteriorly; in E. tectum it is hexa- 

 gonal, with the keel strongly developed and prolonged backward. 

 A narrow black line is continued along the spinal ridge of E. ten- 

 toeia; whereas the middle of the ridge is broadly white in E. 

 tectum, bordered by a black line on either side. The plastron of 

 E. tentoeia is blackish-brown, with a pale border to each plate ; in 

 E. tectum pale with two or three distinct blackish patches on each 

 plate. Comparing the young of the two species, the first vertebral 

 plate forms a much broader pentagon in E. tentobia, being equal 

 in breadth to the second; in young E. tectum the first vertebral 

 plate is considerably narrower than the second : the second vertebral 

 plate in young tentoeia forms a heptagon with the base posteriorly ; 

 in young tectum a pentagon with rounded apex and anterior base : 

 the third in young tentoeia is subquadrilateral, somewhat longer than. 

 broad, with the keel a little produced posteriorly ; in young tectum a 

 pentagon with its base to the front, and the keel much broader and 

 more prominent. Tet, notwithstanding these great differences of 

 detail, and also of the colouring of the head, neck and limbs, the two 

 species are very liable to be confounded on a superficial glance. 



According to M. M. Dumeril and Bibron, the E. teijuga, 

 Schweigger, was obtained by M. Duvaucel from the " salt-water 

 Jake" lying east of Calcutta ; but of the numbers of Terrapins which 

 we have seen from that locality, we have sought in vain for this 

 species, which belongs to the peninsula of India, and is the only one 

 which has been there observed, with the exception of Col. Sykes's 

 specimen of E. tentoeia.* In Ceylon it is replaced by the very 

 distinct E. seb^i, Gray. 



On the Arakan coast, adults of E. dhongoka, Gray, approaching 

 to 2 ft. in length of carapax, would appear to be very common ; 

 but the only young specimen which we have seen of this species 

 was sent down alive from Asam by Major Jenkins, and is now 



* Since the above was printed, we have obtained another Emys from the vicinity 

 of Chaibasa, which appears to be the young of E. dhongoka ; and Mr. Jerdon 

 assures me that a large species abounds in the Nerbudda, 2 feet and upwards, which 

 is probably the same : it is not referred to in Mr. Jerdon's paper, p. 463 ante. 



