26 



Shell much depressed, the depression increasing from before 

 backwards, the shell being somewhat expanded across the inguinal 

 region ; only the posterior border serrated ; second vertebral about 

 as long as broad, narrower than the costals ; nuchal longer than 

 broad. Plastral shields as in G. spinosa and G. grandis. Carapace 

 light brown ; plastron and lower surface of marginals yellow, the 

 plastral shields with a few broad black rays ; the interval between 

 the axillary and inguinal notches black. Head leaden, neck pale 

 yellowish brown ; limbs of the latter colour, with the large scales 

 dark, almost black. 



Length of carapace 9| inches. 



Hob. Hills near Akyab, Arrakan. 



Genus NICORIA, 

 Gray, Cat. Sh. Kept, i, p. 17 (1855). 

 Neural plates mostly hexagonal, with the hinder lateral margins 



Fig. 9. Shell oiNicoria trijuga. 



shortest, or alternately tetragonal and octagonal. Plastron more or 

 less extensively united to the carapace by suture, with short axillary 



