108 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



vol. 37. 



Localities. — Station 4883, on the way from Nagasaki, Japan, to 

 Kagoshima, Kagoshima Gulf, Japan, at Nomo Zaki, N. 83° E., 10.25 

 miles (lat. 32° 33' 30" N. ; long. 129° 32' E.) ; station 4849, on the 

 way from Saigo, Dogo Island, Oki Group, to Matsu Shima, Sea of 

 Japan (off coast of Korea) at lat. 36° 46' N. ; long. 132° 15' E. ; sta- 

 tion 4850, at Liancourt Rocks, NW. (mag.), 13.8 miles (lat. 36° 56' 

 N. ; long. 132° E.) ; station 3766, Shioya Saki Light, N. 78°, W. 108 

 miles. 



Depth. — Surface; 800-846 fathoms in green mud and globigerina. 

 In dip net with Porpita. 



Genus PENTIAS Richardson. 



PENTIAS HAYI Richardson. 

 Pentias hayi Richardson, Proc. IT. S. Nat. Mus., vol. 27, 1904, pp. 47-49. 

 Locality. — Hakodate, Japan. 



A single small specimen, a male, of this species was collected, 

 which differs from the type in the narrower body and narrower 

 epimera. The lateral margins of the segments are not incised as 

 deeply for the reception of the epimera as in the type. Owing to 

 the difference in size, the difference in sex and the insufficient ma- 

 terial, I have referred the two specimens to the same species. The 

 small specimen has the first segment of the thorax marked with ten 

 parallel longitudinal lines of dark brown, close together. There is a 

 small spot of dark brown on each one of the six following segments in 

 the median line, close to the anterior margin, as well as one at the 

 base of the abdomen. On the seventh thoracic segment is a large 

 spot on either side on the lateral margin, and there is a large brown 

 spot on either side of the abdomen close to the lateral margin about 

 the middle of the segment. 



Genus PENTIDOTEA Richardson. 



PENTIDOTEA JAPONICA Richardson. 



Idotea japonica Richardson, Proe. IT. S. Nat. Mus., vol. 22, 1900, pp. 131-134; 

 Idem, vol. 27, 1904, p. 47. 



Localities. — Mororan, Japan ; Hakodate, Japan ; Same, Rikuoku, 

 Japan; Tomakomai, Japan. 

 Depth. — Shore. 



Inasmuch as the palp of the maxillipeds is composed of five articles, 

 this species must be referred to the genus Pentidotea. 



