TITANS- ATLANTIC TEOTINCE. 



85 



Venus crenulata. 

 „ cancellata. 

 „ violacea. 

 Cjnherea dione. 

 „ circinata, 

 „ maculata, 

 „ gigantea. 

 „ flexuosa. 



Artemis concentrica. 



„ lucinalis. 

 Cyclina saccata. 

 Trigona mactroides. 

 Petricola lapicida. 

 Capsula coccinea. 

 Tellina Braziliana. 



„ bimaculata. 



Strigilla camaria. 

 Seraele reticulata. 

 „ variegata. 

 Cumingia. 



Iphigenia Brasiliensis. 

 Lutraria lineata. 

 Periploma ineequivalvis. 

 Pholadomya Candida, 



XVIII. Tkans-Atlaittio Pbovince. 



The Atlantic coast of the United States was supposed by Prof. 

 E. Forbes to consist of two provinces : (1) the Virginian, from 0. 

 Cod to 0. Hatteras, and (2) the Carolinian, extending to Florida; 

 but no data were supplied for such a division. The total num- 

 ber of mollusca is only 230, and 60 of these range farther north, 

 1 5 being moreover common to Europe. These two regions are 

 sometimes treated of together as the Pennsylvanian province. 



Dr. Grould describes 110 shells from the coast of Massachusetts 

 south of Cape Cod, of which 50 are not found to the northward, 

 but form the commencement of the proper American type. The 

 shells of New York and the southern Atlantic States are de- 

 scribed by De Kay, in the State Natural History of New York ; 

 this list supplies 120 additional species, of which at least a few 

 are stragglers from the Caribbean province; e.g. Chama arcinella, 

 Iphigenia laevigata, Capsula deflorata* 



M. Massachusetts. Y. New York, SO. South Carolina. F. Florida. 



Conus mus. F. 



Fusus cinereus. M. SO. 



Nassa obsoleta. M. F. (Mex.) 



„ trivittata. M. SC. 



„ vibex. M. F. (Mexico). 

 Purpura Floridana. (Mex.) 

 Terebra dislocata. Y. SC. 

 Pyrula? papyracea. F. 

 Fulgur carica. M. SC. 



„ canaliculatum. M. SC. 

 Oliva literata. SC. 

 Marginella camea. F. 

 Fasciolaria distans. SC. (Mex. 

 Columbella avara. M. Y. 

 Eanella caudata. M. Y. 

 Natica duplicata. Y. SC. 

 Sigaretus perspectivus. Q. SC. 

 Scalaria lineata. M. SC. 



„ multistriata. M. Y. 



„ turbinata. NC. 



Cerithium'ferrugineum. F. 



„ 4 sp. M. 

 Triforis nigro-cinctus. M. 

 Odostomia, 6 sp. M. Y. 

 Turritella interrupta. M. Y. 



„ concava. SC. 

 (Vermetus lumbricalis. M. P) 

 Calyptreea striata. Y. 

 Crepidula convexa. M. Y. 



„ fomicata. M. F. (Mex). 

 Littorina irrorata. Y. 

 FissureUa alternata. (Say) ? 

 Chiton apiculatus. M. SC. 

 Tornatella puncto-striata. M. Y. 

 Bulla insculpta. M. Y. 



Ostrea equestris. SC. F. 

 Pecten irradians {scallop). 

 Avicula Atlantica. F. 

 Mjiiilus leucophantus. SC. 



* Tlie sea-shells, of the United States have also been collected and desoribed by 

 Say, Le Sueur, Conrad, and Couthouy. 



