VI. — A Catalogue of the Fishes of the Pacific Coast of America 

 North of C err os Island. 



BY CARL H. EIGENMANN AND ROSA S. EIGENMANN. 



Read May 9, 1892. 



The present paper is an enumeration of the fishes occurring" on 

 the Pacific coast of America north of Cerros Island and to a depth 

 of 150 fathoms. The explorations of the U. S. Fish Commission 

 steamer Albatross, during the last three years, have added a large 

 number of species to those previously known from this region, and 

 our own explorations have added about as many new forms, from 

 San Diego alone, as were discovered by the Albatross along the 

 whole coast included in the present paper. These additions, as well 

 as the extension of the habitat of many species, make the present 

 list desirable. 



Several forms have recently been discovered by the Albatross in 

 deeper water. Most of these, however, have little relationship to 

 the littoral fauna, and the deeper water has not been sufficiently 

 explored to warrant a list at the present time. 



We have placed the dividing line between the littoral and the 

 bathybial faunas of this region at 150 fathoms, because all of the 

 genera so far recorded from this depth have representatives in the 

 shallower water — 15 to 50 fathoms. Some of the littoral genera, 

 as Sebastodes, have representatives in deeper water, but this is not 

 of general occurrence ; these are added as foot-notes. 



Cerros Island is a convenient and natural southern boundary to 

 this region. South of it few, if any, of the characteristic genera 

 (Sebastodes, genera of Embiotocidae) of this region are found. A 

 number of southern forms extend further north, but this number 

 has not been materially increased by our explorations at San Diego ; 

 on the other hand, a large number of northern forms, or representa- 

 tives of northern forms which had not been found south of Point 

 Conception, were added to the San Diego fauna. The California 

 fauna has been hitherto divided into a southern and a northern at 

 Annals N. Y. Acad. Sci., VI, June, 1892. 



