11 LIST OF CONTRIBUTORS. 



Systematic arrangement of the Mollusks of the family Viviparidse and 



others, inhabiting the United States 33 



Catalogue of the Fishes of Lower California in the Smithsonian Insti- 

 tution, collected by Mr. J. Xantus 80 



Description of some new Species of Pediculati, and on the classification 



of the group 88 



Descriptive enumeration of a collection of Fishes from the Western 



coast of Central America 162 



Description of a new species of Choerojulis from North Carolina 205 



On an unnamed generic type allied to Sebastes 207 



Description of a new generic type of Ophidioids 209 



Synopsis of the Pomacentroids of the Western Coast of North and Cen- 

 tral America 213 



Notes on the Labroids of the Western Coast of North America 221 



Synopsis of the family of Lepturoids, and description of a remarkable 



new generic type 224 



Synopsis of the North American Gadoid Fishes 229 



Descriptions of the genera of Gadoid and Brotuloid Fishes of Western 



North America 242 



On the Gobioids of the Eastern Coast of the United States 267 



On the genus Periophthalmus of Schneider 271 



Note on the Genera of Hemiramphina? 272 



Description of the genus Stereolepis, Ayres 329 



Description of the genus Oxyjulis, Gill 330 



Notes on some recent Additions to the Ichthyological Fauna of Massa- 

 chusetts 332 



Note on the species of Sebastes of the Eastern Coast of North America 333 



Gray, Asa. Enumeration of the species of Plants collected by Dr. C C. 

 Parry and Messrs. Elihu Hall and J. P. Harbour, during the sum- 

 mer and Autumn of 1862, on and near the Rocky Mountains, in 



Colorado Territory, Lat. 39 41 55 



Synopsis of the Species of Hosackia 346 



Haldeinan, S. S. On Strepomatidje as a name for a family of fluviatile 



Mollusca, usually confounded with Melania 273 



Hill, R. Notes on the Mimidse of Jamaica 304 



James, T. P. See Durand. 



Kennicott, Robt. Descriptions of four new species of Sperm ophilus 157 



Lawrence, G. N. Descriptions of new species of Birds of the Families 



Vironidse and Rallidse 106 



Lea, Isaac. Descriptions- of fourteen new species of Melanidse and one 



Paludins * 154 



Descriptions of eleven new species of Exotic Unionidse 189 



Description of new species of Unio and a Monocondyloea 190 



