^54 C O N C H O L O G Y. 



However, he has much confufed his ge*^ 

 nus and the Ipecies ; for he propofes the 

 Gryphites, which, by all its charaSers, 

 is a true Oyfter, and the pellucid or glafs 

 Chinefe Oyfter, improperly fo called, as 

 fpecies of Anomi^ ; befides many other 

 inaccuracies. 



As for Argenville, he figures the recent 

 Anomia laevis very badly, and without 

 any further refledion, places it among 

 his Heart Cockles ; but, in his additio- 

 nal plates of the fecond edition, he gives a 

 very good figure of the fmooth kind. 



But Mr. Davila treats them fyftemati- 

 cally, and as a genus of his firfl family or 

 Oyflers. He defines them as Shells whofe 

 beak or top of the under valve is perfo- 

 rated, and rifes curved up on the upper 

 valve. He does not however particularize 

 any charafters of the hinge, though he 

 gives an excellent figure of the inner 

 7 ftrudurc. 



