PLATE CI. 



river Froome, where it is known the Mya ovata is also found ; and as 

 to colour, it is no criterion : both kinds are greenish, radiated with 

 yellow, and are more or less vivid in different shells: they are seldom 

 higher in colour than the specimen w r e have figured ; some are more 

 ©f an olive colour, and others are deeply tinged with brown. 



