174 University of California Publications in Zoology [Vol. 11 



I. EUPHAUSIACEA 



As to literature, it may be sufficient to refer to my paper 

 (1911), "The Genera and Species of the Order Euphaasiacea. " 



1. Euphausia pacifica H. J. H. 



Euphausw pacifica H. J. Hansen (1911), p. 28, fig. 10 



A number of moderately preserved specimens from stomachs 

 of ten dog-salmon Onchorhynchus keta (Walbaum), Admiralty 

 Head, Whitby Island. Alaska. June 30, 1903. 



2. Thysanoessa spinifera Holmes 



Thysaiiot'ssa spinifera H. J. Hansen (1911), pp. 38, 41 



Holmes (1900) has published a good description with figure 

 of his single specimen. In the paper quoted (1911) I have added 

 some particulars, basing them on material from the United States 

 national Museum, and in a future paper a new representation of 

 this fine species will be given. 



A couple of small specimens, of which at least the larger 

 belongs probably to T. spinifera, were taken from seven dog- 

 salmon {Onchorhynchus keta) fingerlings, Dundas Bay, Alaska, 

 July 24, 1903. 



3. Thysanoessa raschii ]\I. Sars 



Thysanoessa raschii, H. J. Hansen (1911), pp. 38, 42 

 Three specimens, but unfortunately without locality, taken 

 in stomachs of salmon belong to this species. A single specimen 

 was found among the above named specimens of Euphausia 

 pacifica from dog-salmon, taken at Admiralty Head, Wliitby 

 Island, June 30, 1903. Fragments from dog-salmon stomach, 

 Isanotski Straits, Alaska, July 15, 1904, seem to belong to this 

 species. 



4. Thysanoessa gregaria G. 0. Sars 



Thysanoessa gregaria H. .J. Hansen (1911). pp. 39, 43-44. fig. 15 



Having examined three specimens named by Holmes, I can 

 confirm his determination. It is interesting that this species has 

 also been taken off California, at Avalon, Santa Cataliua Island. 



