MARINE MOLLUSKS — MACGINITIE 91 



ness of the shell, and in the color, which ranges from pale olive-straw 

 to brown. Many of the shells show scars where they have been 

 repau-ed after being crushed; and many are pitted from the inroads 

 of other animals. 



Distribution: Circumpolar. 



Genus Polinices Montfort, 1810 



PoUnices palUdus (Broderip and Sowerby, 1829) 



Plate 12, figure 10 



Natica pallida Broderip and Sowerbj', 1829, p. 372. 



Lunatia -pallida Odhner, 1913, pp. 8, 31, pi. 3, figs. 15, 19-37; pi. 4, figs. 1-8; pi. 5, 



figs. 16-18. 

 Polinices pallida Dall, 1921, p. 165, pi. 14, fig. 5.— Oldroyd, 1927, pt. 3, p. 126, 



pi. 97, fig. 9. 



Ten specimens were taken: 1 living (9.4 mm. in diameter) from 

 120 feet (Aug. 8, 1949); 1 dead (26.4 mm.) from 130 feet (Sept. 15, 

 1948); 2 living (8 mm. and 13 mm.), from 162 feet; 1 living (17.5 mm.) 

 from 341 feet; 2 living (about 13 mm., each) from 477 feet; 2 living 

 (14 mm. and 17 mm.) from 741 feet; and 1 dead (19 mm.) from 

 Eluitkak Pass. Tiny barnacles nestle in the sutures and in the pitted 

 areas of even the living shells. 



Other material examined: Numerous specimens from localities 

 ranging from the Sea Horse Islands south and east to the Aleutians 

 and Puget Sound. 



Discussion: Even in the living shells from Point Barrow, and from 

 such Arctic localities as Icy Cape, the periostracum and part of the 

 shell structure are eroded over the nucleus and postnuclear whorls, and 

 in one the body whorl is pitted and eroded. There is considerable 

 variation in the height of the spire, in the suture, and in the degree to 

 which the umbilicus is open; and one shell may be nearly twice as 

 heavy as another of comparable size. The color ranges from a light 

 olive-gray or a ripe straw to light and medium brown. 



Distribution: Northern and southern Norway, Spitzbergen, Jan 

 Mayen, Iceland, Greenland; Melville Island south to Labrador and 

 Cape Cod; Point Barrow south and east to the Aleutians and west to 

 the Sea of Okhotsk, south to Puget Sound; and in deep water off 

 Redondo Beach, Calif. 



Polinices monteronus (Dall, 1919) 



Plate 12, figure 9 



Euspira monterona Dall, 1919b, p. 352. 

 Polinices monterona DaU, 1921, p. 164. 



Eight living specimens were collected: 1 at 125 feet, 1 at 175 feet, 

 1 at 184 feet, 1 at 295 feet, 1 at 420 feet, 2 at 522 feet, and 2 at 741 feet. 



473771—69 3 



