NEW FOSSIL AND RECENT SHELLS OF THE UNITED STATES. 209 



Locality. Coast of Florida, near St. Joseph's Bay. 



This shell is about the size of D. scalpeUiim, and quite as much elongated. I found 

 a number of odd valves, generally water worn. 



VENUS, Lm. 



V. iNTAPURPUREA. — Ovate-trianguIar, thick, ventricose, with about thirty concentric somewhat reflected 

 ribs, becoming laminated and waved towards the anterior and posterior margins ; the laminae alternately 

 elevated ; radiating striae distant ; lunule cordate ; basal margin rounded and somewhat tumid in the 

 middle, subtruncated posteriorly ; colour white with irregular angular fulvous spots ; interior white 

 with a very large triangular purple stain ; margin crenulated. 1|. 1. 



Localihj. Egmont Key, Tampa Bay. 



Resembles the Miocene fossil Venus cribraria, nob., but is very distinct. 



PECTEN. 



P. FUScoPURPUREUs. — Ovate ; ears subequal, broad and long ; ribs about eighteen, about as wide as the 

 interstices, with a crenulated line or two on the side of each ; ribs finely squamose ; interstices with 

 crenulated longitudinal linej ; colour brownish purple. U. li. 



Locality. Mullet Key, Tampa Bay. 



I found several odd valves of this Pecten in company with P. dislocatus ; and i 

 have elsewhere remarked that although P. irradians {concentricus, Say,) is common 

 on the Bay shore, it is never met with on the sea beach of Mullet Key. 



