NORTH AMERICAN CONCHOLOGY. 



383 



[Proceedings of the Acad, of Nat. Sci. of Philad. — continued.] 



Vol 



I MONODONTINA Conr. 

 269 Margaritana Vonden- 

 buschiana Lea. 



(M. Buschiana Conr.) 



April, 1853. 



Corrigenda. 

 vi 269 ! Unio angustatus Lea. 

 vi 269 1 capax Green (Symphynota 



ylobosa Lea), 

 vi 1 269 1 capsuformis Lea. [rus. 



vi !269i metan ever react U.metaneu- 



Conrad. — Monograph of the genus Fulgur: 

 Conrad. 



by T. A. 



Locality. 

 Georgia to Mass. 



N. J., R. I., Mass. 



Southern coast. 

 Southern coast of Fla. 



Name. 

 Fulgur carica {Murex) Gmelin. 



Pyrula carica Lain. 



aruana Rve. non L. 

 canaliculatum {Pyrula) Lam. 



Buccinum umpullaceuw. Lister. 



Murex canaliculars L. 



Pyrula canaliculata Rve. 

 perversum (Murex) Linn. 



Buccinum, &c. Lister. 



Pyrula perversa. Lam. 

 pyrum (Bulla Dillw.) 



Buccinum, &c. Lister. 



Bulla Jicus & Gmelin. 



Pyrula spirata Lam., Rve. 



F. pyruloides Say. 



Pyrula spirata Rve. 

 candelabrum (Pyrula) Lam. 

 gibbosum Conrad. 



Pyrula perversa Kiener (var.) 



T. A. Conrad. — Notes on Shells. 



Dreissena leucopheeatus Conrad. Virginia. 



Mytilus leucophuatus Conrad. 

 Artemis conceutrlca. Florida. 



A. acetabulum Conrad (fossil). 

 Venus concentrica Born, 

 elegans Conrad. jFlorida. 



A. concentrica Rve. non Born, 

 discus Reeve [Born. S'rn and Middle States. 



Cytherea concentrica Chenu nonj 



Conrad. — Synopsis of the genus Cassidula Humphr., and 

 of a proposed new genus Athleta : by T. A. Conrad. 



[The only American species. — W. G. B.] 



Campeachy ? U. S. ? 



Cassidula corona. 



Pyrula patula Brod. 

 Murex corona Gmelin. 

 Fusus corona Lam. 

 Buccinum ornatum Say. 

 Melongena corona. 



Florida. 



