134 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 109 



Genus Oenopota Morch, 1852 

 Oenopota nazanensis (Dall, 1919) 



Plate 16, figure 3 

 Lora nazanensis Dall, 1919a, p. 45, PL 15, fig. 8. 



Two living specimens were dredged: 1 (10.7 by G.l mm.) at 216 

 feet, and 1 (8.2 mm. high) at 295 feet. The nucleus and ribs of the 

 whorls of the spire are somewhat eroded. 



Other material examined: One specimen, labeled No. 71. This 

 may be the figured type, since the latter was missing from its vial. 



Distribution: Dall (1921) gave the range of this species as Norton 

 Sound to the Aleutians, but there is no record of any specimen from 

 north of the type locality, Nazan Bay. The present range is Point 

 Barrow, the Aleutians, Kodiak Island, Elrington Island in Prince 

 William Sound, and Portage Bay (see Burch, 1946, No. 62, p. 17, for 

 collecting data on the latter localities). The Point Barrow specimens 

 extend the range into the Arctic — from the 60th to the 71st parallel 

 of latitude. 



Oenopota tenuicostata (G. O. Sars, 1878). 



Plate 16, figure 4 



Pleurotoma tenuicostata M. Sars, 1869, p. 259 (no men nudum). 

 Bela tenuicostata G. Sars, 1878, p. 237, pi. 17, figs. la-b. 



A single living specimen, 7.8 mm. in length by 3.7 mm. in diameter, 

 was dredged at 420 feet. The periostracum is worn from the nucleus 

 but the shell is otherwise in excellent condition. 



Discussion: Dall (1921, p. 74) cites M. Sars as the authority for 

 this species, but M. Sars (1869) gives only the name without any 

 description or illustration. The description by G. O. Sars (1878) 

 appears to be the first published one. 



Distribution: Point Barrow, St. La-wrence Island, Nunivak 

 Island, and Safety Cove, Alaska. Johnson (1934) gives the east coast 

 range as Eastport, Maine, to southeast of Nantucket, R. I.; and 

 Thorson (1944) lists eastern and western Greenland, northern and 

 eastern Iceland, Jan May en, Spitzbergen, and northern and southern 

 Norway. The Point Barrow specimen extends the range northward 

 from the 60th to beyond the 71st parallel. 



Oenopota harpa (Dall, 1885) 



Plate 6, figures 5, 6 



Bela harpa DaU, 1885a, p. 523; 1886, p. 300, pi. 4, fig. 2. 



Seven living specimens were dredged: 1 (11.8 by 5.5 mm.), through 

 a bole in the ice, at 149 feet; 1 (10.7 by 5.2 mm.) at 152 feet; 1 (10 

 mm. long, with apex covered with the hydroid Syncoryne), through a 



