THE AMPHIPODA COLLECTED BY THE U. S. BUREA1 OF FISHERIES STEAMER "ALBATROSS" OFF THE WEST COAST OF NORTH AMERICA, IN L903 AND L904, WITH DESCRIPTIONS OF A NKW FAMILY AND SEV ERAL NKW GENERA AND SPECIES. By Samuel J. I [olm es, Of tin 1 Zoological Laboratory of tin I niveraity of Wisconsin, The ((illcct ion of Amphipoda which was obtained by the 1 . S. Bureau of Fisheries steamer Albatross during its cruises off the northwesi coasl of North America during the Salmon Envestigations of L903 ;iimI off southern California in L904, proved to be peculiarly rich in new species. The amphipod fauna of the Pacific Ocean, and especially thai portion of it bordering the North American continent, is very imperfectly known. The species hitherto described have been mainly Littoral forms, and as a large proportion of the Amphipoda obtained by the Albatross were dredged from considerable depths it is not surprising that the percentage of new species is high. < H ing probably to the depth inhabited by many of the species quite a number were found t<> be devoid of eyes. One of the striking features of the collection was the number of species <>t' Ampelisca, most of which proved to be new . The Lysianas sidse were represented by seven species, all new ; for I" ■ ol these it was found necessary to institute new genera, one of which. I alet-tiopsis, is of interest on account of its primitive and transitional character. One species, Stilipes distinct ■. was so unique in it-char acteristics thai a new family had to be created to receive it. and the two species of the new genus Gracilipe& were perhaps sufficiently aberrant to be treated in the same way, but as the Calliopiidae, by a little stretching, could be made to include them it was thought best to let them remain in thai family. Proceedings U. S. National Museum, Vol. XXXV-No. 1654. 188
The Amphipoda collected by the U.S. Bureau of Fisheries Steamer "Albatross" off the west coast of North America, in 1903 and 1904, with descriptions of a new family and several new genera and species
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