SECTION XII. 245 



The fubordinate chara£lers of Efcallops 

 are being eared ; indeed moft authors have 

 injudicioufly made it the chief charader, 

 whereas there are other eared Shells be- 

 fides Efcallops, as the Spondyles, Marga- 

 ritiferiE, &c. and, vice verfa, there may 

 be Efcallops without ears. The other 

 fubordinate charader is to have the top 

 run into a perfeft ftrait line, and thence 

 gradually widen to a round bottom. 



The fpecies are numerous, fome where- 

 of are very curious and of great beauty, 

 as the Ducal Mantle. PI. VI. fig. i. the 

 Compafs or Sole, the Duck's Foot or Coralj 

 Efcallops &c. 



It is worthy remark, that the colours of 

 the under Shells of Efcallops are always 

 fainter than the colours of the upper Shells, 

 and fometimes the valves are differently 

 coloured, as the Compafs or Sok^ which 



R 3 has 



