OP CONCHOLOQY. 



215 



Synonymy of the Species of Strepomatidae ("Melanians) of the 

 United States ; with Critical Observations on their Affinities, and 

 Descriptions of Land, Fresh Water and Marine Mollusca : by george 

 w. TRYON, JR. 8vo., cloth, 100 pp., and 2 lithographic plates. New 

 Tork: Bailliere Brothers, 520 Broadway. 1865. Price $2.00. 



This little volume contains: — 



Contributions towards a Monography of the Order PJiola- 

 dacea, with Descriptions of new Species. 



Descriptions of two new Species of Fresh Water Mollusca 

 from Panama, 



Description of a new Exotic Melania. 



Descrij)tlons of new Species of Fresh Water Mollusca, be- 

 longing to the families Amnicolidse, Valvatidse and Lim- 

 nseidse; inhabiting California. 



Description of a new Species of Pleurocera. 



Description of a new Species of Teredo, from New Bedford, 



Mass. 



Descriptions of two new Species of Mexican Land Shells. 

 Synonymy of the Species of Strepomatidse, Parts 1, 2, 3, 4, 

 and Supplement. 



These papers were all first published in the Proceedings of 

 the Academy of Natural Sciences for 1863 — 5, and two or 

 three of the latter ones have been already noticed by us. The 

 Supplement to the papers on Strepomatidae contains a syno- 

 nymic list of the species published by Mr. Lea in 1864, so 

 that all the species inhabiting the United States are now in- 

 cluded. The interest of this part of the work is much en- 

 hanced by a very full index of the species and synonyms, con- 

 taining nearly 900 names. 



The earlier papers of this volume contain the following de- 

 scriptions of new species: — • 



Zirphsea Gabbii, 

 Xylotrya setacea, 

 Planorbis Fieldii, 

 A7nnicola Panamensis, 

 Mela7iia Helense, 

 Amnicola Rowellii^ 

 Pomatiopsis Binneyi, 

 Valvata virens, 

 Limnaea Adelinse, 



'' Traskii^ 

 Physa Gabbii^ 

 Ancylus fragilis, 

 Pleurocera plicatum, 

 Teredo Thomsonii, 

 Helix Remondi^ 

 Cyclotus Cooperi, 



Coast of Japan. 



Bay of San Francisco. 



Panama. 



it 



Philippine Islands. 

 California. 



Nashville, Tenn. 

 New Bedford, Mass. 

 Mazatlan, Mexico. 



