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small (but larger and fewer than those in temie), and limited to the upper fourth of the whorl. Spiral sculpture of numerous rough, but microscopic, incised lines. Color grayish white. Common offshore in cold water. Do not confuse with B. tenue. Buccinum glaciale Linne Glacial Buccinum Plate 24t Arctic Seas to Washington State. Arctic Seas to the Gulf of St. Law- rence. 2 to 3 inches in length, fairly thick-shelled, but light in comparison to its size. Characterized by its thick, flaring, turned-back outer lip, and by the 2 wavy, strong spiral cords on the periphery of the whorl. Spiral incised lines numerous. Color mauve-brown. Aperture cream with a purplish flush within. Common from low tide to several fathoms in the Arctic region. Buccinum baeri Middendorff Baer's Buccinum Plate 24V Bering Sea. I to 2 inches in length, resembling a thin, beach-worn Thais lima. Aper- ture about % the length of the shell. Rather thin, smoothish, except for m.i- croscopic, incised spiral lines. Color drab grayish with purplish to reddish undertones. Periostracum, when present, is thin, translucent and light-brown. Operculum V5 the size of the aperture. Commonly found washed ashore on the beaches of Alaska and the Aleutians. A very unattractive shell. Genus Volutopsius Morch 1857 Subgenus Volutopsius s. str. Volutopsius castaneus Morch Chestnut Buccinum Figure 51c Alaska. 2.V2 to 3^4 inches in length, rather solid; with 4 whorls; aperture large and slightly flaring. Interior brownish white enamel. Columella slightly arched, white within, brown on the parietal wall. Exterior surface brownish and smoothish, except for coarse axial wrinkles appearing more as deform- ities in growth. Moderately common on rocks below low-water mark. Subgenus Pyrulofusus Morch 1869 Volutopsius bar pa Morch Left-handed Buccinum Plate 24P Alaska.