120 PROCEEDINGS OF THE NATIONAL MUSEUM tol. i09 



Other material examined: About 10 specimens from Labrador, 

 the Grand Banks, Greenland, the Gulf of St. Lawrence, and Egg 

 Harbor, Maine; about 50 specimens from localities rangmg from ley 

 Cape Bering Island, the Pribilofs, the Aleutians, and northern Japan. 

 Discussion: There are variations in the length of the aperture 

 and canal in relation to the length of the spu-e, in the convexity of 

 the whorls, in the degree of flaring of the mouth, in the thickness of 

 the shell, and in the width of the interspaces as compared with the 

 spiral ridges One specunen from the Chamisso Islands, Kotzebue 

 Sound is very slender; in several from Bering Island the whorls are 

 unusuaUy convex; in one from the Shumagins the interspaces are 

 wide- three from off Cape Seniavine have heavy shells, and in two 

 of these the whorls are unusually tumid; and one from the Grand 

 Banks has a longer aperture and canal than usual. 



Distribution: Point Barrow to Juan de Fuca Strait, Washmgton; 

 northern Japan; Labrador to Egg Harbor, Maine. 



Colus capponius Dall, 1919 

 Coins capponius Dall, 1919b, p. 317; 1925, p. 12, pi. 3, fig. 2.-01droyd, 1927, 

 pt. 1, p. 217, pi. 9, fig. 2. 

 One shell, measuring 43.5 mm. high by 27.5 mm. m diameter, was 

 taken on Oct. 11, 1949, at a depth of 341 feet, from a bottom of rocks 

 and stones and a smaU amount of gravel. Although this was an empty 

 shell it had been alive^'quite recently. Several species of bryozoan 

 colonies and some foraminifers were gi-owing on the shell. In patches 

 over the sheU and over the entire surface of the apical whorls, the 

 periostracum and outer layer of the shell were worn off. 



Other material examined: Several specimens from Pomt Barrow 



and Bering Strait. , 



Distribution: Point Barrow and Bering Strait. It has not been 

 reported previously from any locaUty except near Port Clarence, 

 Bering Strait. 



Colus martensi (Krause, 1885) 



Sipho martensi Krause, 1885b, p. 287, pi. 18, fig. 18. 

 Colus martensi Oldroyd, 1927, pt. 1, p. 222, pi. 28, fig. 6. 



On Aug. 10, 1948, a recently dead shell was dredged at 40 feet at 

 Eluitkak Pass to Elson Lagoon, on a bottom predominantly stony, 

 with some mud. The shell, which was occupied by a hermit crab, 

 Pagurus trigonocheirus, measures 46 mm. high by 18.5 mm m di- 

 ameter, but both ends and the lip are somewhat broken. The shell 

 is medium brown and, like many of the Arctic shells, shows the marks 

 of more than one injury to the lip as it was growing. 



Other material examined: A few specimens from Cape Shelag- 

 skoi (70th paraUel), Metschigne Bay, Bering Strait, and Plover Bay. 



