384 



BIBLIOGRAPHY OP 



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



Vol. 



Page. 



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Mar. 



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vn 



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Vll 



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Dec. 



1854. 



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Jan. 



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Feb. 



1855. 



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Name. 



Locality. 



Conrad. — Omissions and Corrections to the Synopsis of 

 North American Naiades : by T. A. Conkad. 



Unio perobliquus Conrad. 



Rangianus Lea. 



Sageri Conrad. 

 Stroph. Etow^aensis. 

 Monodontina Buschiana Conrad. 



Margarita Von der Buschiana Lea. 

 Unio pectitus = Scalenaria Agdssiz. 



Aberti = Crypogenia Agassiz. 



fragosus '\ 



nohilis > = Quadrula Agassiz. 



apiculatus J 



Conrad. — Notes on Shells, with descriptions of three re- 

 cent and one fossil species : by T. A. Conead. 



Gnathodon rostratum Petit = G. flexuosum. 



trigonum Petit = G. Lecontei Conrad'^ 

 Trigonella Conrad = Pachydesma. 

 Dolium album Conrad. 

 Alasmodonta Conrad. 



l<ea. — Rectification of Mr. T. A. Conrad's Synopsis of the 

 Family of Naiades, &c. : by Isaac Lea. 



[Mr. Lea's views of synonymy being included in his synopsis, are not 

 quoted here. As regards errors of dates, the following are specified. — 

 W. G. B.] 



Mr. Conrad's Mr. Lea's date Mr. Lea's date 

 date. of reading, of distribution, 



Name. 



Unio lanceolatus Lea. 

 irroratus Lea. 

 occidens Lea. 

 rubiginosus Lea. 

 &c. 



1832^ 

 1832; 

 1832^ 

 1832) 



1827 



1829 



1828 



1829 



Conrad. — Descriptions of three new species of Unio: by 



T. A. CONKAD. 



Name. 

 Unio grandensis Conrad. 

 Taumilapasensis Conrad. 

 Pearlensis Conrad. 



Locality. 

 Rio Grande, Texas. 

 San .Juan ri v , Taumila- 

 Pearl riv., Miss. [pas. 



Conrad. — Description of a new species of Melania: by 



T. A. CONKAD. 



Melania exigua Co. 



nrad. 



|Colorado Des., Cal. 



Lea. — Descriptions of new Fresli-water Shells from Cali- 

 fornia : by Isaac Lea. 



Pompholyx Lea (n. g.) 



effusa Lea. 

 Melania Shastaensis Lea. 



nigrina Lea. 



Sacramento riv., Cal. 

 Shasta & Scott riv , Cal. 

 Clear cr , Shasta Co , Ca. 



