3U 



BIBLIOGRAPHY OP 



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



Vol. 



Page. 



iv 



153 



iv 



154 



iv 



154 



iv 



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iv 



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iv 



154 



iv 



155 



iv 



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iv 



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iv 



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iv 



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156 



Apr. 



1S49. 



iv 



173 



Feb. 



1S50. 



V 



10 



Mar. 



1852. 



vi 



54 



Apr. 



1852. 



vi 



58 



Dec. 



1852. 



vi 



199 



vi 



199 



vi 



199 



Feb. 



18.53. 



vi 



243 



Unio contrarius Conr. 



nucleopsis Conr. 



limatulus Conr. [p. 162.) 



aratus (plectophorus Conr. oii 

 Margaritana Eto-wahensis Conr. 

 Melania coelatura Co7ir. 



perangulata Co7ir. 



nebulosa Co7ir. 



percarinata Conr. 



symmetrica Conr. 

 Solecardia Conr. (n. g.) 



eburnea Conr. 

 Petricola sinuosa Conr. 

 Cyathodonta Conr. (n. g.) 



undulata Conr. 

 Pholadopsis Conr. (n. g.) 



pectinata Conr. 

 Parapholas bisulcata Conr. 

 Penitella Wilsoni Conr. 

 Triton perforatus Conr. 

 Oliva propatula Conr. 



Locality. 



Ogeecliee river. 

 Etowah river. 

 Savannah river. 

 Flint river, Ga. 

 Etowah river. 

 Savannah river. 

 Savannah river. 

 Savannah river. 

 Savannah river. 

 Savannah river. 

 Lower Calif'a or Pern. 

 Lower Calif'a or Peru. 

 Lower Calif'a or Peru. 

 Lower Calif'a or Peru. 

 Lower Calif'a or Peru. 

 Lower Calif'a or Peru. 

 Lower Calif'a or Peru. 

 Lower Calif'a or Peru. 

 Lower Calif'a or Peru. 

 Lower Calif'a or Peru. 

 Lower Calif'a or Peru. 



H.eller. — On Ciliary Cells in some Maine Naked Mollusea 

 in Embryo (Eolis, Acteon viridis, Cantops Harvard- 

 iauus Ac/assiz) : by William Keller, M. D. 



Conrad. — Descriptions of new species of Fresh-water 

 Shells : by T. A. Conkad. 



Unio Aberti Conr. [Verdigris river, Ark. 



Lcea. — Note on the Periodicity of Naiades : by Isaac Lea. 



)Lea. — Remarks on Species and on Agassiz's Division of the 

 Naiades : by Isaac Lea. 



Conrad. — Notes on Shells, with descriptions of new species : 

 by T. A. CoNKAD. 



Cryptodon^ preoc. = Schizotheerus. 



Nuttallii Conr. = Schizothaerus Nuttallii. 

 Unio turgidus Lea = U. Mortoni Conr. 



Conrad. — Synopsis of the Family of Naiades of North 

 America, with Notes, and a table of some of the genera 

 and subgenera of the family, according to their geographi- 

 cal distribution, and descriptions of genera and subgenera : 

 by T. A. CoNEAD. [Also in pamphlet form.] 



Vol. 



Pa. 



Name. 



Vol. 



Pa. 



Name. 



244 



Unio abacus Raid. 



vi 



244 



Unio affinis Lea. 



244 



Aberti Conr. 



VI 



244 



amcenus Lea. 





U. Lamarckianus Lea. 



VI 



244 



amygdalum Lea. 



244 



acutissimus Lea. 



vi 



244 



altili3 Conr. 



