204 



Sargus rhomboideS) Mic? % opogon costatus, Grystes salrno- 

 ides, and two species of Pomotls. 



Dr. Jackson stated that Prof. Emmons had expressed a 

 desire to address the Society, on the subject of the views 

 of Prof. H. D. Rogers on earthquake agency in geological 

 formations. 



It was voted that Dr. J. be requested to notify Prof. E. 

 that the Society would gladly hear an exposition of his views. 

 The following persons were elected as Corresponding 

 Members : 



Benjamin A. Stannard, of Cleaveiand, Ohio. 

 C. C. Douglass, of Detroit, Mich. 

 Geo. A. Perkins, M. D., Missionary at Cape Palmas, 

 Africa. 

 James G. Richards and Thomas Daniel were nominated 

 for membership. 



Nov. 20, 1844. 



Dr. C. T. Jackson, Vice President, in the Chair. 



Dr. Gould presented a paper from Mr. Henry C. Lea, of 

 Philadelphia, entitled " A Description of some new species 

 of Marine Shells inhabiting the Coast of the United States." 

 It was accompanied with figures of the Shells, which are 

 characterized as follows : 



Pholas semicostata. Testa subtriangulari, postice producta, et 

 acuta, antice oblique truncata, tenui, albida, diaphana, antice in- 

 flata et costata ; costis transversalibus, muricatis, magnis, crebris, 

 postice obsoletis ; sulco uno longitudinali, e natibus decurrente ; 

 margine basali curvato ; margine dorsali vix recto ; natibus valde 

 inflatis ; lamina dorsali parva ; cochlea ligulata, acutissima, incur- 

 va. Long. ,17; lat. ,32; diam. ,16 poll. Hab. South Carolina. 



Bulla biplicata. Testa cylindrica, subquadrata, crassa, albi- 

 da, polita, eburnea ; spira occulta; anfractu ultimo superne callo- 

 so, inferne striis transversis parvis ; apertura superne arctata, 

 ovata ; columella plica magna et parva. Long. ,15 ; lat. ,07 poll. 

 Hab. Cape May. 



