136 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 109 



Grinnell Land to Labrador, Ne\vfoundland, and Cape Cod, Mass.; 

 northern and eastern Iceland, and northern and southern Norway. 



**Oenopota'* pyramidalis (Strain, 1788) 

 And varieties 



Plate 16, figures 10-13, Plate 17, figures 6, 7 



Buccinum pyramidale Str0m, 1788, p. 297, pi. 1, fig. 22. 



Fusus pleurotomarius Couthouy, 1838, p. 107, pi. 1, fig. 9. 



Defrancia vahlii MoUer (ex Beck MS.), 1842b, p. 86. 



Pleurotoma pyramidalis Morch, 1869, p. 22. 



Pleurotoma pyramidalis var. jenisseensis Leche, 1878, p. 56, pi. 1, figs. 17a-b. 



Bela pyramidalis G. Sars, 1878, p. 222, pi. 16, fig. 3 (typical form). 



Bela pyramidalis var. semiplicata G. Sars, 1878, p. 222, pi. 16, fig. 4. 



Three specimens were collected: 1 recently vacated shell (19.8 by 

 7.4 mm.), with part of the nucleus missing, was taken at 295 feet; 1 

 living (17.7 by 7 mm.) at 453 feet; and a broken shell at 477 feet. 

 These shells are white. (See pi. 16, figs. 10, 11.) 



In addition to the above, 3 specimens of what are probably "0." 

 pyramidalis var. semiplicata G. O. Sars were taken: 2 living specimens 

 (12.8 by 5.8 mm. and 14 by 6.1 mm.) from 152 feet; and 1 drilled 

 shell (15.4 by 6.9 mm.) from 216 feet. The dead shell is white, the 

 living ones are an olive tan. (See pi. 16, figs. 12, 13.) A specimen 

 11.7 mm. high from 217 feet was identified by Dr. Thorson as Bela 

 pyramidalis var. vahli (pi. 17, figs. 6, 7). 



Discussion: Dr. Thorson wrote me that the specimens of "0." 

 pyramidalis from Point Barrow are somewhat larger, but otherwise 

 fully agree with the type and with specimens from Iceland and 

 western Greenland. Morch (1869) gave the name var. gigantea to 

 the largest specimens. Dr. Thorson also stated that the specimens 

 of var. semiplicata have the same structure and sculpture on the 

 uppermost whorls as a specimen in the collection from the Murman 

 Coast, but that the Point Barrow specimens are larger and the last 

 whorl is more tumid. Some of the specimens appear to be identical 

 with Leche's (1878) figure of var. jenisseensis. 



Distribution: Point Barrow to Friday Harbor, Wash, (see Burch, 

 1946, No. 62, p. 21, for collecting data from the Aleutians to Friday 

 Harbor); and (Thorson, 1944) Grimiell Land to Labrador; western 

 and eastern Greenland; all Iceland, Jan Mayen, Spitzbergen, and 

 northern and southern Norway. The specimens from Point Barrow 

 extend the range into the Pacific area of the Arctic. 



