'2S4: DAVENPORT ACADEMY OF NATURAL SCIENCES. 



Family, STiRULiDiE. 

 Genus, SPIRULA, Lo.m. 

 o. S. Pkronii, Z/cm. 1822. Hyn. S. frag His, ^timp. '[860. The only re- 

 cent species known. I have observed this shell by thousands on the 

 beaches, cast up by storms. The animal is seldom seen or taken alive. 



Class, GASTEROPODA. 



Order, PROSOBRANCHIATA, 



Family, Stkombid.e. 



Genus, STROMBUS, L. 



6. S. bitl^erculatus, Lam. Tortugus Keys. 



7. S. PUGiLis, L. West Coast. 



8. S. alatus, Gmelin. West Coast. 



9. S. gigas, L. Very abundant. The animal affords an excellent 

 article of food, while the shells are imported by thousands for manufac- 

 turing into articles of jewelry. 



10. S. ACCiPiTER, Lam. By no means common. Found off the Keys. 



Family, Conid^e. 

 Genus, BEL A, Leach. 



11. B. PLiCATA, Adams. Loc, Indian Pass, Fla. (.Jewett). Cedar 

 Keys (Calkins). 



Genus, CLATHURELLA. P. P. Carpenter. 



12. C. .Jewetti, Stearns. Tampa Bay. 



Family, Muricid^e. 

 Genus, MUREX, L. 



13. M. POMUM, Gmelin. Abundant around Cape Sable. 

 U. M. SPINCOSTATA, VaUnc. Same locality. 



Genus, UROSALPINX, Stimp. 

 1-5. U. Tampaensis, Con. 



16. U. cinereus, Say. 



17. U. FloPvIdanus, Con. All abunda'it from Cedar Keys southwards. 



Genus, TRITONIDEA. 



18. T. ringens, Eeeve. Loc, the Keys. 



Genus, RANELLA, Lam. 



19. R. CAUDATA, Say. Both coasts. 



20. R. Tampaensis, Con. Abundant from Cedar Keys to Cape Sable . 



21. R. CLATHRATA, Gray. This elegant shell— the B. muriciformis, 

 Brod.— was determined for me by Mr. Tryon. It is a PaciHc coast form, 

 and has not, I believe, been before detected in our waters. I collected a 



