CATALOGUE OF THE SHELLS OF FLORIDA CALKINS. 



243 



Class, CONCHIFEEA, Lam. 



(LAMELLIBRANCHIATA, Blain.) 



Family, Ostreid^. 



Genus, OSTREA, i. 



146. O. YiRGiNiCA, Gmelin. 



147. O. EQUESTRis, Say. 

 Both abundant species. 



— . O. SEMiCYLiNDRiCA, Say. Doubtful. Aberrant. 



Genus, ANOMIA, L. 



148. A. GLABRA, Verrill. Synonyms, A. e2)hippium, Gould ; A. elec- 

 trica, Gould. Very common attached to Pinnas and other shells. 



Genus, PECTEN, O. F. lluller. 



149. P. IRRADIANS, Lam, 



150. P. NODOSUS, L. 



151. p. DisLOCATUs, /Say. 



152. p. FUSCOPURPUREUS, Con. 



All abundant species, except No. 150, which cannot be called so. 



Genus, LIMA, Brug. 



153. L. SQUAMOSA, Lam, 



154. L. SCABRA, Dillw. 



Foiind at Tortugas, attached to corals. 



• Genus, SPONDYLUS, L. 



155. S. G^DAROPUs, Dillw. Syn., -S. Americanus, Lam. I obtained 

 this species at Tortugas. 



Genus, PLICATULA, Lam. 



156. P. RAMOSA, Lam. Occurs abundantly attached to corals and 

 shells. 



Family, Aviculid^e. 

 Genus, AVICULA, Brug. 



157. A. Atlantica, Lam. Quite common among the Keys. 



158. AviCULA , sp. indt. Tortugas. 



Genus, PERISTA, Brug. 



159. P. PERNA, Wood. Syn., P. ephippium, Sowerby. From Tortu- 

 gas. Attached to corals. 



Genus, PINNA, L. 



160. P. SEMiNUDA, Lam. 



161. P. MURiCATA, L. Syn., p. CaroUnensis, Hanley. Both abun- 

 dant species. 



