CATALOGUE OF THE SHELLS OF FLORIDA CALKINS. 241 



Genus, TROCHUS, L. 



121. T. BREVISPINA, Gmelin. 



122. T. PICA, Gmelin. 



128. T, AMERICANA, Gmelin. 



124. T. Tampaensis, Conrad. 



All abundant on the west coast and among the Kej's. A well marked 

 species. 



Family, Janthixid.e. 

 Genus, JANTHINA, Bolten. 



125. J. FRAGiLis, Brug. Syn., /. communis. Lam. 



126. J. GLOBOSA, Sivainson. 

 Frequently cast on shore by storms. 



Family, Fissurbllid^e. 

 Genus, FISSURELLA, Brug. 



127. F. alternata. Say. A common species. 



. Family, Calyptr^eidje. 

 Genus, CREPIDULA, Lam. 



128. C. fornicata, L. Syns., C. glauca. Say ; C. convexa. Say. 

 Very common, attached to oyster shells, etc. 



129. C. UNGUiFORMis, Lam. Syn., C. plana. Say. This extremely 

 common shell is better known by Say's name, but on the ground of 

 priority, Lamarck's has the precedence. 



130. C. ACULBATA, Gmelin. Quite common. 



Family, Patbllid.e. 

 Genus, PATELLA, L. 



131. Patella , s^j. indt. Loc, Key West. • 



Family, Dentaliad.e. 

 Genus, DENTALIUM, L. 



132. D. DENTALS, i. Sy u., D. attenuatum,Sa.y. I dredged this shell 

 at Cedar Keys, in six fathoms of water, and can identify it with no other 

 species. 



133. D. STRiOLATUM, Stm. Syn., D. entalis, Migh. From the east 

 coast, and a well-marked species. 



Family, Chitonid^. 

 Genus, CHITON, L. 



134. C. PICEUS, Gmelin. 



135. C. APICULATUS, Say. 



136.- Chiton , sp. indt. 



All abundant species among the Keys. Found clinging to rocks within 

 tide marks. 



