VI. CONTENTS. 



Part 4— April, 1870. 



Page. 



1. Record of Meetings, 193 



2. On a New California Helicoid Land Shell, by J. G. 



Cooper, M.D., 196 



3. Descriptions of Three New Species of Shells, by John 



Wolf, 198 



4. Notes on West Coast Land Shells, No. 2, by J. G. 



Cooper, M.D., 199 



5. Notices and Reviews of New Conchological Works, by 



George W. Tryon, Jr., 220 



I. American. — Annals of the Lyceum of Natural History. 



Proceedings of the Boston Society of Natural History, 

 October, 1869. Canadian Naturalist. Index to Vol. 

 XII. Observations on Genus Unio, by Isaac Lea. 



II. FoREiGN.^ — English. — Proceedings of the Zoological So- 



ciety of London. Conchologia Iconica. Memoirs of 



the Literary and Philosophical Society of Manchester. 

 French. — Journal de Conchyliologie. Bulletin de I'Acade- . 



mie Imperiale des Sciences de St. Petersburg. Revue 



et Magazin de Zoologie. 

 Italian. — Bulletino Malacologico Italiano (Terrestrial and 



Fluviatile Mollusca). 

 German. — Fauna der Land und Susswasser Mollusken 



Seibenburgens. Archiv fur Naturgeschichte. Novitates 



Concholofficas. 



