SECTION Xil. 273 



one genus, by the name of Conchse Inae- 

 quilaterae^ and the Swallow in another ge- 

 nus he calls Conchas Aliformes. 



The laft and twelfth family of Bivalves 

 with equal valves, is the mufcles ; they 

 are not eared ; are moft generally very con- 

 vex, of ^ long and narrow fhape, and 

 the hinge Is a meer flight furrow v/ithout 

 any tooth, and Is lituated not at the top 

 of the Shell, but a little w^ay down one 

 of the fides. 



The fpecies are not many ; and this 

 genus is univerfally agreed upon by authors. 



SECTION 



