ON SOME ISOPODS OF THE FAMILY DAJID.E FEOM 

 THE NOKTHWEST PACIFIC OCEAN, WITH DESCRIP- 

 TIONS OF A NEW GENUS AND TWO NEW SPECIES. 



By Hakiuet Iviciiakdson, 



Collaborator, Divialon of Marine Iitrertchraivs, U. *S'. National Masciim. 



The following descriptions are of some Dajidse which were col- 

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

 cruise to the northwest Pacific Ocean in the summer of 190G. A new 

 genus is added to the family, and Holojyhryxus giardi and Holu- 

 'phryxus calif orniensi^^ new species, are described. 



The number of Dajida? genera is rapidly increasing, so that the 

 family now contains the following: Dajus Kr0yer,. Notophryxus 

 Sars, AspldophryxuH Sars, Ileteropliryxus Sars, Branchiophryxus 

 Caullery, Frodajus Bonnier, Zouophryxus Richardson, Ilolopliryxus 

 Richardson, and Ai'tJwophryxus^ new genus. 



LIST OF REFERENCES. 



Bonnier, Jules. Sur deux types uouveaux d"Kpiearitl«^s parasites d'nu Cumace 



et d'uii Seliizopode, Comptes Reudus, CXXXVI, 1!)03, pp. ]()2-103. Paris. 

 Caullery, ^Maurice. Braucliiopliryxiis nyctiphaiia', n. j;., sp., Epicaride iionveaii 



de la faniille des Da.iidip, Jouru. R. Mier. Soc. I^oudon, 1SK7, Pt. 3, p. 204. 



Also in Zool. Auzeiger, XX, 1S97, pp. 88-92. Leipsic. 

 KE0YER, Henrik. Voyages en Scandina^■ie. en Laponie, an Spitsberg et anx 



Fer()e, Zoologie, Crustacea. (Published under the direction of M. Paul 



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

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



Fish Commission steamer Albatross, Bull. V. S. Fish Commission, 1003, pp. 



.51-53. Washington. 



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



Fisheries, XXIV, 1004, pp. 220-221. Washington. lOO.^. 



Sars, Oeorge O. Crustacea of Norway, II, 1800, pp. 223-224. Bergen. 



Crustacea of the Norwegian North Atlantic Expedition, 187G-1878. 



Christiania, 1883. 



Report on the Schizopoda, Challrngcr Ifeport. XIII, 188.5. Pt. 37, pp. 



220-221. London. 

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



Fisheries, Ireland, Sci. Invest., 1004, II, 1005, pp. 77-78, pi. xi, figs. 1-4.' 



Proceedings U. S. National JVIuseum, Vol. XXXIil— No. 1586. 



689 



