45 



LEA, ISAAC, LL.D.(Continued.) 

 Kemarks on Mulleria. (November 22d, 1853.) 



Vol. vi, No. 12, p. 435. December, 1853. 



Kemarks on Gneiss bored by Pholas Dactylus. (Dec. 13th.) 



Vol. vi, No. 12, p. 438. December, 1853. 



Kemarks on Acostoea Guaduasana. (January 3d.) 



Vol. vii, No. 1, p. 1. Februrary, 1854. 



Rectification of Mr. T. A. Conrad's " Synopsis of the Family of 

 Naiades of North America," published in the Proceedings of the 

 Academy of Natural Sciences of Philadelphia, February, 1853. 

 (Read February 7th.) 



Vol. vii, No. 6, p. 236. December, 1851. 

 Also Pamphlet. 



Description of a new sub-genus of Naiades. (Read April 1st.) 



Vol. viii, No. 2, p. 79. April. 1856. 



Description of a new species of Triquetra, KLEIN, (Hyria, LA- 

 MARCK.) (Read April 1st.) 



Vol. viii, No, 2, p. 79. April, 1856. 



Description of new Freshwater Shells from California. (Read 

 April 1st.) 



Vol. viii, No. 2, p. 80. April, 1856. 



Descriptions of twenty-five new Species of Exotic Uniones. 

 (Read April 15th.) 



Vol. viii, No. 2, p. 92. April, 1856. 



Description of four new Species of Exotic Uniones. (Read May 

 13th.) 



Vol. viii, No. 3, p. 103. June, 1856. 



Description of thirteen new Species of Exotic Peristomata. 

 (Read June 3d.) 



Vol. viii, No. 3, p. 109. June, 1856. 



Descriptions of fifteen new Species of Exotic Melaniana. (Read 

 July 8th.) 



Vol. viii, No. 4, p. 144. August, 1856. 



Description of the Byssus in the Genus Unio. (Read Sept. 23d.) 



Vol. viii, No. 5, p. 213. October, 1856. 



Description of eleven new Species of Uniones from Georgia. 

 (Read November 4th.) 



Vol. viii, No. 6, p. 262. December, 1856. 



