no. 1701. NORTHWEST PACIFIC ISOPODS — RICHARDSON. 123 



Spirontocaris, species ( ? ) ; station 4788, on the way from Preobra- 

 jeniya Bay, Mendi Island, to Nikolski Bay, Bering Island, "by the 

 passage between islands at North point Copper Island, N. 76° E., 8.8 

 miles (lat. 54° 50' 24" N. ; long. 167° 13' E.) ; station 4819, on the way 

 from Ebisu, Sado Island, to Nanao, Noto Peninsula, Hondo, Japan, 

 at Hime Saki Light, S. 16° E., 3.8 miles (lat, 38° 09' N. ; long. 138° 

 32'12"E.). 



Depth. — Forty-three to two hundred and forty-five fathoms in 

 green sand and fine brown mud. 



Remarks. — The specimen from station 4778 has five pairs of small, 

 rounded tubercles on the fleshy ridges or modified appendages of 

 the abdomen (the pleopoda). 



Family DAJIDiE. 

 Genus HOLOPHRYXUS Richardson. 



HOLOPHRYXUS GIARDI Richardson. 



Holophryxus giardi Richardson, Proc. U. S. Nat. Mus., vol. 83, 1908, pp. 

 690-692. 



Locality. — Station 4793, on the way from Nikolski Bay, Bering 

 Island, Komandorski Islands, to Petropaulovsk, Avatcha Bay, Kam- 

 chatka, at Toporkov Island, harbor of Nikolski, Bering Island, N. 

 58° E., 44 miles (lat, 54° 48' N.; long. 164° 54' E.). 



Depth. — Two thousand seven hundred fathoms. 



Parasitic on Gennadas borealis Rathbun. 



HOLOPHRYXUS CALIFORNIENSIS Richardson. 



Holophryxus californiensis Richardson, Proc. U. S. Nat. Mus., vol. 33, 1908, 

 pp. 692-694. 



Locality. — On the way from Yes Bay to Seattle, at Bushby Point. 

 Depth. — One hundred and fifty to two hundred and eighty fathoms. 

 Parasitic on Pasiphcea paciflca Kathbun. 



Genus ARTHROPHRYXUS Richardson. 



ARTHROPHRYXUS BERINGANUS Richardson. 



Arthrophryxus beringanus Richardson, Proc. TJ. S. Nat. Mus., vol. 33, 1908, 

 pp. 695-696. 



Locality. — One female, with Schizopoda but not attached, from 

 station 4760, on the way from Union Bay, British Columbia, to 

 Dutch Harbor, Alaska, by the Goletas Channel and Unalga Pass, at 

 lat. 53° 53' N. ; long. 144° 53' W. 



Depth. — Two thousand two hundred fathoms. 



The type-specimen came from station 4793, on the way from 

 Nikolski Bay, Bering Island, Komandorski Islands, to Petropaulovsk, 



