NORTH AMERICAN CONCHOLOGY. 



383 



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



MONODONTINA Coi>k. 

 269 Margaritana Vonden- 

 buschiana Lea. 



(M. Buschiana Conr.) 



April, 1853. 



Name. 



COKRIGENDA. 



vi 269 Unio angustatus Lea. 



vi :269 ccipax Green (Si/mphynota 



globosa Lea), 

 vi ;269 capssrfonnis Lea. [rns. 



vi |269| metaneveriesid U.metaneu- 



Vol. 



Page. 1 



vi 



316 



vi 



319 



vi 



319 



vi 



319 



vi 



319 



vi 



319 



VI 



319 



vi 



320 



vi 



320 



vi 



320 



vi 



320 



Dec. 



1853. 



vi 



448 



vi 



449 



•Monograpli of the genus Fulgur: hj T. A. 



Locality. 

 Georgia to Mass. 



N. J., E. I., Mass. 



Southern coast. 



Southern coast of Fla. 



Conrad.- 



CoifKAD. 



Name. 

 Fulgur carica (^Murcx) Gmelin. 



Pyrula carica Lam. 



aruana Rve. non L. 

 canaliculatum (Pyrula) Lam. 



Buccinum ampullaceum Lister. 



Murex canaliculatics L. 



Pyrula canaliculata Rve. 

 perversum (Murex) lAnn. 



Buccinum, &o. Lister. 



Pyrula perversa Lam. 

 pyrum (Bulla Dillw.) 



Buccinum, &c. Lister. 



Bulla Jicus & Gmelin. 



Pyrula spirala Lam., Rve. 



/'. pyruloides Say. 



Pyrula spirata Rve. 

 candelabrum (Pyrula) Lam. 

 gibbosum Conrad. 



Pyrula perversa Kiener (var.) 



T. A. Conrad. — Notes on Shells. 



Dreissena leucopheeatus Conrad. iVirginia. 



Mytilus leucoptiu atus Conrad. 

 Artemis concentrlca. Florida. 



A. acctahiUum Conrad (fossil). 

 Venus concentrlca Born, 

 elegans Conrad. j Florida. 



A. concentrica Rve. non Born. | 

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



Cytherea concentrica Chenu non| 



Campeachy? U. S. ? 



Conrad. — Synopsis of the genus Cassidula Ilumphr. 

 of a proposed new genus Athleta; by T. A. Conkad, 



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



Cassidula corona. Florida. 



Pyrula jiutula Brod. 

 Murex corona Gmelin. 

 Fusus corona Lam. 

 Buccinum ornatum Say. 

 Metongena corona. 



and 



