MELVILL : MOLLUSCA OF S. CAROLINA AND FLORIDA. 1 69 



131. T. radiata, (L.) 



Key West, common. The var. unimaculata, (Lamarck) 

 also observed. 



132. T. similis, (Sowerby). 



Key West, South Florida. 



133. T. tenera, (Say). 



Key West, South Florida. 



134. T. interrupta, (Wood). 



Very fine at Key West, though not abundant. 



135. T. sol, (Hanley). 



This magnificient species, belonging to the subgenus 

 Phylloda is the finest bivalve I obtained. It was very rare 

 at Key West, and I only succeeded in finding two specimens, 



136. Strigilla carnaria, (L.) 



Key West South Florida. 



137. S. pisiformis (L.) 



Key West, South Florida. 



Fam- AMPHIDESMID^. 



138. Amphidesma orbiculatum (Say). 



Charleston, South Florida. 



Fain: DONACID^E. 



139. Donax variabilis (Say). 



South Carolina and South Florida. 



Fam: VENERID^. ■ 



140. Callista (Dione) gigantea (Chem.) 



Magnificent specimens of all sizes, Key West. 



141. Mercenaria iViortoni (Conr.) 



South Florida. 



142. M. violacea (Schum.)=Venus mercenaria (L.) 



South Carolina. 



