CONTENTS. V 



5. Descriptions of New Tertiary Shells, with Notes on 



Two Genera of Lamellibranchiata, by T. A. Conrad, 199 



6. Notes on Lingual Dentition, No. 2, by W. G. Binney 



and Thomas Bland, ...... 202 



7. On the Shells of the Holston River, by James Lewis, 



M. D., 216 



8. On the Limpets ; with Special Reference to the Species 



of the West Coast of America, and to a more Natu- 

 - ral Chissification of the Group, by Wm. H. Dall, . 227 



9. Notices and Reviews of New Conchological Works, by 



George W. Tryon, Jr., 283 



I. American. — Synopsis of the Family Unionidse, by Isaac Lea ; 



Canadian Naturalist; Proceedings California Academy 



of Sciences; Proceedings Academy of Natural Sciences, 



Philadelphia. 

 TI. Foreign. — British.- — Proceedings of Zoological Society ; 



Proceedings of Asiatic Society of Bengal ; Annals and 



Magazine of Natural History ; Morphological Researches 



on the Mollusca; Conchologia Iconica, etc. 

 French. — Journal de Conchyliologie ; Revue et Magasiu 



de Zoologie ; Senoner's Notes Malacologiques, etc. 

 German. — Kreglinger's Binnen-MoUusken ; Archiv fur 



Naturgeschichte ; Kuster's Conchylien Cabinet; Novi- 



tates Conchologicae, etc. 



Part 4— June 1, 1871. 



Page, 



1. Record of Meetings, . . . •. . .297 



2. Descriptions of Nudibranchiate Mollusca inhabiting 



Polynesia, hj W. Harper Pease, .... 299 



3. Notes on some New Forms of Terrestrial and Fluvia- 



tile Mollusca found in Trinidad, by R. J. Lechmere 

 Guppy, 306 



4. On the Lingual Dentition of Pompholyx eftusa, by 



Thomas Bland and W. G. Binney, . . . 312 



5. Palgeontological Notes, by T, A. Conrad, . . . 314 



1. Figure and Reference to Fasciolaria subtenta. 2. Synopsis 

 of the Eocene Species of Catinus. 3. Description of a new 

 Fresh-water and a Land Shell of the Oregon Tertiary. 



