384 



BIBLIOGRAPHY OF 



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



Name. 



Locality. 



Conrad. — Omissions and Corrections to the Synopsis of 

 North American Naiades : by T. A. Conrad. 



Unio perobliquus Conrad. 



Rangianus Lea. 



Sageri Conrad. 

 Stroph. Etowaensis. 

 Monodontina Buschiana Conrad. 



Margarita Von der Buschiana Lea. 

 Unio pectitus = Scalenaria Agassiz. 



Aberti = Crypogenia Agassiz. 



fragosus } 



nobilis l = Quadrula Agassiz. 



apiculatus ) 



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

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



Gnathodon rostratum Petit = G. flexuosum. 



trigonum Petit = G. Lecontei Conrad/ 

 Trigonella Conrad = Pachydesma. 

 Dolium album Conrad. 

 Alasmodonta Conrad. 



Lea. — 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'sdate Mr. Lea's d;ite 

 date. of reading, of distribution. 



183 



18 



Name. 



Unio lanceolatus Lea. 

 irroratus L< a. 

 occidens Lea. 

 rubiginosus Lea. 



&c. 



332 | 

 532 ] 



ls:!2 



1832 



1827 

 1829 



1828 

 1829 



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



T. A. CoNRAD. 



Name. 

 Unio grandensis Conrad. 

 Taumilapasensis Conrad. 

 Pearlensis Conrad. 



Locality. 

 Rio Grande, Texas. 

 San Juan riv . Tauinila- 

 Pearlriv., Miss. [pas. 



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

 T. A. Conrad. 



Melania exigua Conrad. 



|Colorado Dos.. Cal. 



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

 fornia: by Isaac Lea. 



Pompholyx Lea (n. g.) 



effusa /."<■ 

 Melania Shastaensis Lea. 



nigrina Lea. 



Sacramento riv., Cal. 

 Shasta & Scott riv , Cal 

 Clear cr , Shasta Co , Ca.j 



