CATALOGUE OF THE SHELLS OF FLORIDA — CALKINS. 247 



Genus, RANGIA, Desm. 



222. K. CYRENOiDES, Desm. {Gnathodon cuAieata, Gray.) 



223. R. FLEXUOSA, Con^ 



224. R. ROSTRATA, Petit. 



No. 222 is better known by Gray's name. The " mound-builders'" used 

 this species extensively in constructing their " mounds," of which there 

 are thousands along the Gulf coast, and even so far inland as New Or- 

 leans, where the roads are made of this shell, taken from the deposits 

 there. The other species I am uncertain about. 



Genus, RAETA, Gray. 



225. R. LINE ATA, ISay. 



226. R. CANALICULATA, Say. 



Plentiful on the east coast at St. Augustine and southwards. 



Family, Tellinid^e. 

 Genus, TELLINA, L. 



227. T. CONSTRICTA, Briig. East coast. 



228. T. LUSORiA, Say. East coast. 



229. T. POLITA, Say. East coast. 



230. T. ELEGANS, Gray. West coast. 

 281. T. TAMPAENSis, Con. West coast. 

 232 T. ALTERNATA, Say. East coast. 



233. T, DECORA, Say. The Keys. ' 



284. T. TENERA, Say. The Keys. 



235. T. Braziliana, Speng. The Keys. 



236. T. iris, Say. The Keys. 



237. T. subradiata, Stm. Mullet Key. 



238. T. radiata, Lam. Tortugas. 



Genus, STRIGILLA, Turton. 



239. S. PisiFORMis, L. 



240. S. FLEXUOSA, Say. 

 Locality, The Keys. 



Genus, SANGUINOLARIA, Lam. 



241. S. SANGUINOLENTA, Gmelin. A West Indian species collected 

 by me at Tortugas. [Capsa deflorata.) 



Genus, MACOMA. Leach. 



242. M. Balthica, L. 



[Psam. fusca,) Say. East coast. 



