10 



CHELONIADE. 



which, in zoological language, different names are given from 

 their situation. The upper and lower jaws are covered with 

 a horny beak, as before described ; they are not denticulated 

 at the edges ; they are sharp, and scarcely sinuous ; and the 

 apex, both in the upper and lower, is sharp and hooked, that 

 of the under shutting within that of the upper. The feet do 

 not materially differ from those of the species generally, of the 

 marine form, as before described. The tail is conical, and 

 is so short that it does not extend beyond the posterior mar- 

 gin of the shell. 



The colour of the upper parts is yellow, marbled or splash- 

 ed with a deep rich brown ; the plates of the head are brown, 

 often margined with yellow ; the under parts of the whole 

 animal are yellowish white ; and in the young individual 

 there is a spot of black occupying the areola, or nucleal spot 

 of the four posterior pairs of sternal plates. 



