251 



The Annual Report of the Board of Directors of the Pennsylvania 



Institution for the Deaf and Dumb, for 1851. Philada. 8vo. — 



From the Directors. 

 The American Journal of Science and Arts. Second Series. No. 



38. March, 1852. — From Profs. Silliman (^ Dana, Editors. 

 The Medical Examiner and Record of Medical Science. Edited by 



Francis Gurney Smith, M. D. and John B. Biddle, M. D. New 



Series. Vol. VIII. Nos. 1, 2, 3. Jan. Feb. and March, 1852. 



Philada. 8vo.— From Dr. F. G. Smith. 

 The Medical News and Library. Vol. X. No. 111. March, 1852. 



Philada. 8vo. — From Blanchard ^ Lea. 

 A Treatise on the Anatomy, Physiology and Diseases of the Human 



Ear. By James Bryan, M. D., Professor of Surgery in Geneva 



Medical College, &c. &c. Philada. 1851. &\o.—From the 



Author. 



An announcement was made of the death of Dr. John Gris- 

 com, of Burlington, N. J., a member of this Society, who 

 died there on the 26th ultimo, aged 77 years. 



Mr. Lea read the three following entitled papers on fluviatile 

 and terrestrial molluscs, chiefly from the fresh waters of the 

 United States, viz: — 



1. — ^'■Descriptions of New Species of the Family Unionidce.^^ — 

 By Isaac Lea. 



In this paper there are 44 species of Uniones, and 12 of Ano- 

 dontdB, characterised (with remarks upon each) under the following 

 names. 



Unio affinis. Unio Henleyianus. 



„ Barrattii. „ irreptus. 



„ buxeus. ,, Ingallsianus. 



,, Clarkianus. ,, Keinerianus. 



„ concavus. „ Kleinianus. 



„ Cuvierianus. „ Lamarckianus. 



„ decoratus. „ Lazarus. 



„ Floridensis. „ luridus. 



„ Forbesianus. „ merus. 



„ fraternus. „ Moussonianus. 



„ Gibbesianus. „ nigellus. 



„ hebes. „ nigerrimus. 



