96 AMERICAN JOURNAL 



Descriptions of new American Unionidae, (with colored 



plates.) BY J. G. ANTHONY. 



DescripAions of new Fossil Testacea, (with p)lates.) by t. a. 



CONRAD. 



Review of the Goniobases of Oregon, of California, (with 



plate.) BY GEORGE W. TRYON, JR. 



Descriptions of new Species of Fresh Water Shells from 

 the Pacific States, (with colored plate.) by george w, 

 TRYON, ja. 



On the Classification and Geographical Distribution of the 

 Family Strepomatidae. george w. tryon, jr. 



Several other papers are also being prepared for us by 

 Messrs. Binney, Conrad, and others. 



The attention of Conchologists is requested to the adver- 

 tisement of a " Collection of Shells for Sale," printed on the 

 third page of our cover. 



The late Judge Cooper was very proud of this collection, 

 which cost him much time and trouble to accumulate. It is 

 particularly rich in marine shells, including over 2600 species 

 of these, besides several hundred lluvatile and terrestrial 

 species. Mr. P. P. Carpenter, writing about this cabinet re- 

 marks, "It contains a peculiarly valuable series of West Coast 

 shells, of West Indian species of authentic localities, and of 

 East Coast species. 



This admirable collection we trust will pass entire into pos- 

 session of some Scientific Institution, College, or Public 

 Societ}^, who, by acquiring it, will secure authoritively named 

 and scientifically arranged cabinet, ready for immediate use in 

 identifying, and studying the species of American Marine 

 Mollusca. 



