MARINE MOLLUSKS — MACGINITIE 89 



Other material examined: Numerous specimens from the British 

 Isles, Norway, Iceland, Greenland, Labrador, Maine, and Massa- 

 chusetts; also from Franklin Bay, Canada, and from localities from 

 Bering Strait to the Queen Charlotte Islands, British Colombia; 4 

 specimens from Saklialin Island. 



Discussion: There is variation in the degree of flaring of the outer 

 lip, some shells are noticeably longer and narrower than others, and 

 in some the last whorl enlarges much more abruptly than in others. 

 There is also variation in the degree of "hairiness" or number and size 

 of the "bristle-like appendages" of the periostracum. About half of the 

 specimens from Sitka and farther south are relatively long and narrow, 

 while those from Kodiak Island northward tend to be broader, with a 

 more flaring mouth. 



Distribution: Spitzbergen, Norway, the Faroes, the British Isles, 

 Iceland, Greenland; Parry Island, Melville Island (type locality), and 

 Franklin Bay, Canada, and Labrador to Massachusetts; Point Barrow 

 south and east to the Aleutians and the Queen Charlotte Islands. It is 

 new to Point Barrow. 



Trichotropis kroyeri Philippi, 1849 



Trichotropis kroyeri Philippi, 1849, p. 175.— Dall, 1921, p. 149, pi. 11, fig. 1.— 

 Oldroyd, 1927, pt. 3, p. 42; pt. 2, pi. 31, fig. 14. 



Six specimens, five of which were empty shells, were dredged from 6 

 stations ranging from 80 to 477 feet. The smallest shell is 16.0 high 

 by 11.5 mm. in diameter; the largest, 38.0 by 24.5 mm.; the living shell, 

 19.0 by 13.5 mm. 



Other material examined: Five specimens from Spitzbergen (type 

 locality); about 50 from Point Barrow (1 dead shell, Ray Exped.), 

 Cape Prince of Wales, the Shumagins, off Seniaviue Island, off the 

 Kudobin Islands, and off Bristol Bay. 



Discussion: There is considerable variation in the proportion of the 

 length to the diameter; 3 specimens from off the Pribilof Islands and 

 several from Spitzbergen are rather squat, and the latter have a 

 distinct carina. In 4 specimens from Spitzbergen, the spiral cords are 

 fewer and sharper and the shell is thinner than in the Alaskan speci- 

 mens. 



Distribution: Spitzbergen (type locality) ; Point Barrow through 

 Bering Strait to the Shumagins. 



Family Naticidae 



Egg "collars" of Natica clausa came up with the fu"st dredge hauls 

 made after the ice went out and were present thi-oughout the summer 

 and into the middle of October. One collar taken at 453 feet on 

 Oct. 11, 1949, had one young snail in each egg space. 



