16 



467 Pinna seminuda 



468 * " muricata 



Lain. B South Carolina. 

 Linn. B St. Simon'slsland 

 Georgia. 

 <fc-m** r, .Smith Gareima. 



V 470 *Avicula Atlantica 



*^47l *Lima glacialis 

 ^ 472 * " squamosa 



Lam. B South Carolina. 



Lam. 



Florida. 



B 



"473 *Pecten concentricus Say A New York. 



Islandicus Chem. B Mass. Bay. 



Magellanicus Lam. 



ornatus u 



nodosus " 



purpuratus " 

 teriuicostatus 



1/475 

 476 



> 477 

 478 

 47UL 



v 480 *Plicatula ramosa 



B Maine. 



" C Florida. 



C 



11 C Atlantic coast. 



Mighls. C Maine. 



**} *J.6, 



481 *0strea Borealis 

 43:2 u equestris 

 4^HL_i^ CQitaUj 



Lam. 



Lam. 

 Say 



C Florida. 

 c/,4, 



A New York. 

 C Florida. 

 -IT^New York, i 



4S4 



465 



semi cyJinddca Say B Florida. 

 V r irginiana Lister A 



486 *Anomia ephippium->. Linn. 



487 " undulata 

 aculeata 



V488 

 489 

 490 

 491 



'^ 



squamula 

 electrica 



Gmel 

 Linn. 



u 



Lam. 



A New York Bay. 



C Mass. Bay. 



C " 



C " u 



c 



C New York Bay. 



92 *Terebratula psittacea Lam. B Coast of Maine. 

 * / 493 " caput serpentis Gould C Mass. Bay. 



