CONTENTS. 



Part 1— February 25th, 1865. 



1. Catalogue of the Eocene and Oligocene Testacea of the 



United States, by T. A. Conrad 1 



2. Description of two New Species of Goniobasig, by John 



G. Anthony 36 



3. Description of two New Species of Goniobasis, by S. S. 



Haldeman ,. 37 



4. Description of New Species of Strepomatidse, by George 



W. Tryon, Jr 38 



5. Descriptions of New Species of Pholadidse, by George W. 



Tryon, Jr 39 



6. Observations on the Genus lo, by George "W. Tryon, Jr 41 



7. Note on the Buccal Plate (Jaw,) in Certain Genera of 



the Family Cyclostomacea, by Thomas Bland 45 



8. Note on the Jaws of Helices, by W. G. Binney 47 



9. Description of the Genus Ariolimax, Morch, by W. G. 



Binney 48 



10. Descriptions of New Species of North American Land 



and Fresh Water Shells, by W. G. Binney 49 



11. Diagnoses of Newly Discovered Genera of Gasteropods, 



belonging to the Sub-Family Hydrobiinse, of the 

 Family Rissoidse, by Dr. Wm. Stimpson 53 



12. On Certain Genera and Families of Zoophagous Gas- 



teropods, by Dr. Wm. Stimpson 55 



13. Kevision of M. Pettit's Catalogue of the Genus Mono- 



condyloea, by Charles M. Wheatley 65 



14. Catalogue of MoUusca, Collected by Prof. D. S. Shel- 



don, at Davenport, Iowa, by George W. Tryon, Jr 68 



EDITOR'S TABLE. 



Reviews and Summary of Conchological Publications 71 



American. — On the Terrestrial Pulmonifera of Maine, by Ed. S. Morse. — 

 Meek'sCheck List of North American Miocene Fossils. — Mr. Lea's 

 Papers in Proceedings of the Academy of Natural Sciences of Phila- 

 delphia, for 1864. — On the Structural Characters of the so-called Me- 

 lanians of North America, by Wm. Stimpson. — Descriptions of nine 

 New Species of Helix inhabiting California, by W. Newcomb. — Com- 

 plete Writings of Ratinesque. 



Foreign. — On the Classification of the Gasteropodous Mollusca, by M. 

 Gouriet. — On the Present State of Malacological Nomenclature, by P. 

 P. Carpenter. — Species of Mollusca obtained in Corunna Bay, by R. 

 McAndrew and H. Woodward. — Sowerby's Thesaurus Conchylio- 

 rum. — Conchologica Iconica, &c. 



Scientific Intelligence 94 



Note on the Genus Simnia, Risso. — British Association. — Judge Coop- 

 er's Collection of Shells, «fec. 



ILLUSTRATIONS. 



Portrait of Thomas Say, with Autograph. 

 Four Colored and Five Plain Plates. 



iii. 



