23 



Genus II.— Cyprina, Lam. 

 Cyprina islandica, L. 



Cyprina islandica, v crassior, Jeff. 



Genus III.— Astarte, J. Sow. 



ASTARTE SULCATA, Da CoS. 



Astarte sulcata, v paucicostata, Jeff. 



Astarte sulcata, v Scotica, M. &= R. 



Astarte sulcata, v elliptica, Bro. 



Astarte sulcata, v truncata, Jeff. 



Astarte sulcata, v minor, Jeff. 



Astarte sulcata, v trigona,y^ 



Astarte sulcata, v incrassata, Broc. 



Astarte sulcata, v multicostata, y^ 

 Astarte compressa, Mont. 



Astarte compressa, v globosa, Moller. 



Astarte compressa, v striata, Leach. 



Astarte compressa, v nana, Jeff. 

 Astarte triangularis, Mont. 



Genus IV.— Circe, Schu. 

 Circe minima, Mont. 



Circe minima, v triangularis, Mont. 



Family Xlli.-VENERID/€, Z^^^/^. 



Genus I.— Venus, Linn. 

 Venus exoleta, L. 

 Venus lincta, Pult. 



Venus lincta, v compta, Lov. 

 Venus chione, L. 

 Venus fasciata, Da Cos. 



Venus fasciata, v radiata, Jeff. 



Venus fasciata, v raricostata, Jeff. 

 Venus ovata, Fenn. 



Venus ovata, v lutea, Jeff 



Venus ovata, v trigona, Jeff. 

 Venus casina, L. 

 Venus verrucosa, L. 



