ON SOME ISOPODS OF THE FAMILY DAJIDiE FROM 

 THE NORTHWEST PACIFIC OCEAN, WITH DESCRIP- 

 TIONS OF A NEW GENUS AND TWO NEW SPECIES. 



By Harriet Richardson, 

 Collaborator, Division of Marine Invertebrates, U. 8. National Museum. 



The following descriptions are of some Dajidse which were col- 

 lected by the U. S. Bureau of Fisheries steamer Albatross during its 

 cruise to the northwest Pacific Ocean in the summer of 1906. A new 

 genus is added to the family, and Holophryxus giardi and Holo- 

 phryxus calif omiensis, new species, are described. 



The number of Da j idee genera is rapidly increasing, so that the 

 family now contains the following: Da jus Kr0yer, Notophryxus 

 Sars, Aspidophryxus Sars, Heterophryxus Sars, Branchiophryxus 

 Caullery, Prodajus Bonnier, Zonophryxus Richardson, Holophryxus 

 Richardson, and Arthrophryxus, new genus. 



LIST OP REFERENCES. 



Bonnieb, Jules. Sur deux types nouveaux d'Epicaridcs parasites d'un Cuniace 



et d'un Schizopode, Cpmptes Rendus, CXXXVI, 1903, pp. 102-103. Paris. 

 Caullery, Maurice. Branchiophryxus nyctiphanse, n. g., sp., Epicaride nouveau 



de la famille cles Dajida?, Journ. R. Micr. Soc. London, 1897, Pt. 3, p. 204. 



Also in Zool. Anzeiger, XX, 1897, pp. 88-92. Leipsic. 

 Kr^yer, Henrik. Voyages en Scandinavie, en Laponie, an Spitsberg et aux 



Feroe, Zoologie, Crustacea. (Published under the direction of M. Paul 



Gaimard.) Atlas, pi. xxviii, figs. 1-2, pi. xxix, fig. 1. Paris, 1849. 

 Richardson, Harriet. Isopods collected at the Hawaiian Islands by the U. S. 



Fish Commission steamer Albatross, Bull. TJ. S. Fish Commission, 1903, pp. 



51-53. Washington. 

 Isopods of the Alaska Salmon Investigation, Bull. U. S. Bureau of 



Fisheries, XXIV, 1904, pp. 220-221. Washington, 1905. 

 Sars, George O. Crustacea of Norway, II, 1899, pp. 223-224. Bergen. 

 Crustacea of the Norwegian North Atlantic Expedition, 1876-1878. 



Christiania, 1883. 



Report on the Schizopoda, Challenger Report, XIII, 1885, Pt. 37, pp. 



220-221. London. 



Tattersall, W. M. The Marine Fauna of the Coast of Ireland, Pt. 5, Isopoda, 

 Fisheries, Ireland, Sci. Invest., 1904, II, 1905, pp. 77-78, pi. xi, figs. 1-1. 



Proceedings U. S. National Museum, Vol. XXXIII— No. 1586. 



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