90 PROCEEDINGS OF THE NATIONAL MUSEUM vol. loa 



Egg collars of Polinices also appeared in dredge hauls from the first 

 of the open season until the last of October. Not infrequently, collars 

 and fragments of collars washed ashore. Most of the Polinices egg 

 collars appeared much too large to belong to P. monteronus and P. 

 pallidns of the sizes that were dredged, indicating that larger P. 

 pallidus occurred farther offshore in deeper water or that some other 

 larger species occurred there. Of 8 egg collars of Polinices that 

 appeared in August, 3 were old and 5 were medium in age; of 11 taken 

 on Sept. 26, 1949, 3 were old, 5 medium, and 3 were fairlj' fresh; of 5 

 taken on Oct. 3, 1949, 3 were freshly deposited and 2 were somewhat 

 older; and one taken on October 28, 1949, had been deposited recently. 



Larvae in egg collars deposited during the latter part of October 

 imdoubtedly spend the remainder of the winter developing and do not 

 escape until early summer, but it is interesting to speculate on what 

 happens to young naticids that are still in egg collars in the middle of 

 October. It seems strange to think of them remaining in the egg 

 collars until open water about nine months later, and equally strange 

 to think of them spending their first months out of egg capsules 

 during the depth of winter. 



Genus Natica Scopoli, 1777 

 Natica claiisa Broderip and Sowerby, 1829 



Plate 1, figure 10; Plate 12, figure 8 



Natica clausa Broderip and Sowerby, 1829, p. 372. — Odhner, 1913, pp. 7, 14, pi. 3, 

 figs. 1-3, 5-14, 16, 17; pi. 5, figs. 7-14.— Ball, 1921, p. 163, pi. 14, fig. 11.— 

 Oldroyd, 1927, pt. 3. p. 122, pi. 97, fig. 2.— Morris, 1947, p. 97, pi. 29, fig. 5; 

 1951, p. 133, pi. 29, fig. 5; 1952, p. 94, pi. 24, fig. 25. 



Eluitkak Pass and practically every station deeper than 110 feet 

 3^ elded from 1 to 5 specimens of A^. clausa, and on three occasions 

 during stonns living specimens were cast ashore. Fourteen living 

 specimens were taken from 213 feet and 11 from 453 feet. The 

 largest shell (about 27 mm. in height) came from 213 feet; the smallest 

 (7.0 mm.) from 162 feet; another small one (8.7 mm.) from 295 feet; 

 another (7.9 mm.) from 213 feet; and still another (7.7 mm.) from 110 

 feet (September 8, 1948). 



Other material examined: Over 40 specimens from Novaya 

 Zemlya, the Kola Peninsula, Spitzbergen, Norway, the Shetlands; 

 several from off Labrador, Greenland, and the coast of Maine; about 

 40 from localities from Point Barrow to the Pribilofs, the Aleutians, 

 Kamchatka, Sakhalin Island, and Japan. 



Discussion: The nucleus and at least the first postnuclear whorl 

 of the Point Barrow specimens are badly eroded in even the youngest. 

 There is variation in the length of the spire, in the degree of convexity 

 of the whorls, in the degree of flattening at the suture, in the thick- 



