MARINE MOLLUSKS — MACGINITIE 149 



other record of the genus from the Pacific area is that of a single 

 specimen of C. hoylei Robson taken off Valparaiso, Chile, by the 

 Challenger. 



The appearap.ce of this deeper-water animal along shore is accounted 

 for by upwelfing water following an offshore wind of three days 

 duration. 



Family Octopodidae 



Genus Benthoctopus Grimpe, 1921 



Benthoctopus hokkaidensis (Berry, 1921) 



Polypus glaber Sasaki, 1920, pp. 163, 167, 172 (not P. glaber "Ruppell" Wiilker). 

 Polypus hokkaidensis Berry, 1921, p. 352 (new name for P. glaber Sasaki, not 



Wiilker). 

 Octopus hokkaidensis Sasaki, 1929, pp. ii, 33, 63, 66; text figs. 24-26; pi. 4, figs. 



4, 5; pi. 11, fig. 5.12 



One specimen, a gravid female, was taken at a depth of 216 feet on 

 Oct. 6, 1949. The body, marked with light orange on a cream back- 

 ground, was 85 mm. long and 57 mm. in diameter, with arms 150 mm. 

 long. 



Distribution: Originally taken off Japan by the Albatross and 

 more recently by the Russians in Bering Sea and the Sea of Okhotsk. 

 It is new to the Ai'ctic. 



Class Pelecypoda 



Order Prionodesmacea 



Suborder Taxodonta 



Family Nuculidae 



Genus Nucula Lamarck, 1799 



Nucula tenuis (Montagu, 1808) 



Var. expansa Reeve 



Plate 18, figure 4 



Area tenuis Montagu, 1808, suppl., p. 56, pi. 29, fig. 1. 



Nucula expansa Reeve, 1855, appendix, p. 397, pi. 33, fig. 2. 



Nucula tenuis and var. expansa Soot-Ryen, 1932, p. 4, pi. 1, figs. 3, 4, 6. 



Nucula tenuis Morris, 1951, p. 6, pi. 7, fig. 6. 



Of the 96 specimens collected from 19 stations, over half came from 

 depths of less than 125 feet. The highest yields were 17 from 118 

 feet, 14 from 120 feet (Aug. 8, 1949), 14 from 122 feet, 7 from 151 feet, 



"For this synonymy I am indebted to Dr. S. Stillman Berry. 



