GEOEMYDA. 



23 



the heel, and a group of still larger conical tubercles on each side on 

 the back of the thighs. Adult dark brown or blackish ; carapace 

 of young yellowish brown, with dark-brown markings. 



Length of shell 18 inches. 



Hob. Assam, Burma, Siam, Malay Peninsula, Sumatra. 



Genus GEOEMYDA, 

 Gray, P.Z. S. 1834, p. 100 (part,). 



Neural plates mostly hexagonal, hinder lateral margins shortest. 

 Plastron extensively united to the carapace by suture, with axillary 



Fie;. 7. Skull of Geoemyda grandis. 



and inguinal peduncles just reaching the first and fifth costals ; 

 entoplastron intersected by the hurnero-pectoral suture. Skull 



