CONTENTS 



Page. 



1. Record of Meetings 109 



2. D ascription of New^ Species of Fresh Water Shells from 

 Michigan, b\ A. 0. Currifi- 112 



3. On the various principles of Zoological Classification, b}' 0. 



A L. Morch 114 



4. On Green Oysters, hy A. W. E. O'Shaughnessy 133 



5. On the Genus Fulgur and its Allies, by Theodore Gil!, M. D 141 



6. On the Systematic Position of Buccinum altile and B. Esch- 

 eri, by Tlieodore Gill, M. D 153 



7. Monograph of the Terrestrial Mollusca of the United States, 



by George W. 'I'lyon, Jr., (Continued) 155 



8. Synopsis of the Genera Sycotypus, Browne, and Busycon, 

 Bolton, by T. A. Conrad 182 



r>. Descriptions of New Miocene Shells, hy T. A. Conrad 186 



10. Notes on Fossil Shells and Descriptions of New Species, by 



T. A Conrad 188 



11. Description of a New^ Genus of Astartidas, by T. A. Conrad.... 191 



12. Descriptions of New West Coast Shells, by T. A. Conrad 192 



13. Description of a Nev?- Species of Limnea, by S. S.Haldeman.... 194 



14. Notices and Reviews of New^ "Works, by George W. Tryon, Jr., 195 



American. — Land and Fresh Water .'■'hells of North America. I'arts 2 and 3, by Wm. G. 



liiniiey. Catalogo de los MoIuscils de la Isla de Cuba, by Kaf.iel Arangd. 

 Britl.-ih. — Generic Furm-s of Shells, by .Suwerby. Alcuck on the Tongues of Mollusca. 



Sowerby's Thi-faiirus Conchyliorum. Annals and Magazine of Natural History. 



.louinal of the Asiatic Society of Bergal. 

 French. — Journal de Conchyliologio. Kevue et Magasin de Zoologii. 

 German. — Malakozoologische Blatter. Novitates Conchologicae, etc. 

 Italian. — Rigacci's Catalogue of Shells. 

 J\'onvcgian.— Jo\ntin\ of the Scientific Society of Christiana. 



15. Scientific Intelligence 207 



New Locality for Glaudina truncata. Shell-Collecting in Brazil. Dr. Gould's Cabinet 

 of Shells, etc. 



APPENDIX. 



1(3. By-Law^s of the Conchologlcal Section of the Academy of 

 Natural Sciences of Philadelphia. 



17. Prospectus of a Catalogue and Synonymy of all the Genera, 

 Species and Varieties of Recent Mollusca. 



18. Catalogue and Price List of rare and valuable Conchological 

 Works. 



19. Price List of Shells from the Poulson Collection. 



NOTICE TO CONTRIBUTORS. 



Authors sending specimens with their papers, can have colored illustra- 

 tions furnished without expense to them. 



Twenty copies of every contribution (without re-paging or illustration) is at 

 the service of its author, if applied for in season. 



Extra copies, re-paged, can be had on the following terms : 



2.3 copies. 50 copies. 100 copies. 250 copies. 



IG pages, $4 00 |5 00 $6 75 $10 00 



8 pages, 3 00 3 75 5 25 7 50 



2 to 4 pages, 2 50 3 12 4 25 6 25 



Uncolored plates at 3 cents each, or colored plates 12 to 18 cents each. 



Contributions, as well as Papers and Works for Review or Exchange, 



should be directed to 



Conchological Section, Academy of Natural Sciences, Philadelphia. 



