LIST OF CONTRIBUTORS, 



With references to the several Articles contributed by each. 



Allen, Harrison, M. D. Descriptions of two new Species of Vespertilionid?e. and 

 some remarks on the genus Antrozous 246 



Buckley, S. B. Notes on some American Ash Trees, (Fraxinus,) with de- 

 scriptions of new Species 2 



Descriptions of new Plants from Texas, No. 2 5 



Descriptions of Plants, No. 3 88 



Note No. 2. On Quercus heterophylla 100 



Cassin, John. Catalogue of Birds collected by the United States North Pa- 

 cific Surveying and Exploring Expedition, in command of Gapt, 



Rodgers, U. S. N., with notes and descriptions of new species 312 



Conrad, T. A. Descriptions of New Genera, Subgenera and Species of 



Tertiary and Recent Shells 284 



Catalogue of the Miocene Shells of the Atlantic Slope 559 



Cope, E. D. Synopsis of the species of Holcosus and Ameiva, with diag- 

 noses of new W. Indian and S. American Colubridae 60 



On some new and little known American Anura , 151 



Contributions to Neotropical Saurology 176 



On Neosorex Albibarbis 188 



On Lacerta echinata and Tiliqua dura 189 



Notes upon some Reptiles of the Old World , .337 



Catalogues of the Reptiles obtained during the Explorations of the Parana, 

 Paraguay, Vermejo and Uraguay Rivers, by Capt. Thos. J. Page, 

 U. S. N. ; and of those procured by Lieut. N. Michler, U. S. Top. 



Eng 346 



Coues, Elliott. Revision of the Gulls of North America ; based upon speci- 

 mens in the Museum of the Smithsonian Institution 291 



Supplementary note to a Synopsis of the North American forms of the 



Colymbidae and Podicepidae 404 



A Review of the Terns of N. America 535 



Edwards, Wm. H. Description of certain species of Diurnal Lepidoptera 

 found within the limits of the United States and British America, 



No. 2 54 



The same, No. 3 221 



Elliott, D. G. Remarks on the species composing the genus Pediocaetes, 



Baird 402 



