132 PROCEEDINGS OF THE ACADEMY OF 



Pecten nodosus, Lam. 



Apparently very rare ; one valve only (No. 2584) ; beach, worn, 

 in winter. 



Pecten, sp. indet. 



One specimen (No. 1687), fragment of a large species. "Pro- 

 bably fossil." 



Pectunculus, probably charlestonensis, Holmes. 



A few specimens (Nos. 1704, 2504, 2640) from the beach. 



" I think there is another species, much smaller. There ought to 

 be a good many fossil Pectiinculi, of which eleven species are 

 given by Conrad in his list of the miocene shells of the Atlantic 

 slope, most of them from North or South Carolina. Living or 

 fresh specimens would be of great interest." 



Area americana, Gray. 



Yery common, beach and elsewhere, both living and dead. 



Area holmesii, Kurtz. 



Beach and elsewhere ; very common. 



" I have seen no detailed description nor authentic specimen of 

 this species, and am uncertain whether a detailed description has 

 ever been published. I feel no doubt, however, of the correctness 

 of the identification" (of Nos. 2500, 49, 50, 1, 3, 4, etc.). 



Area lienosa, Say. 



Beach, frequent ; all the specimens I gathered were discolored 

 and more or less worn. 



" Fossil ? Say described it as fossil, but Stimpson has it in 

 his recent list." 



Area noae, Linn. 



More abundant than the next, to judge from specimens gathered 

 indiscriminately. Beach ; generally much worn. 



"^. zebra Swainson, according to Say. Whatever is the proper 

 name of this, it is certainly the shell that Say describes and 

 figures (Conchology, Binnej^'s Reprint, p. 229, fig. 66)." 



Area occideutalis. 



Beach, common ; usually worn. 



" Prof. Stimpson says this is different, and I see a very plain 

 distinction ; in noae the ribs are alternately large and small, while 



[July 18, 



