From one of two dredge hauls from coarse sediment, taken near San Juan Island, Washington, NE Pacific (approx. 48º32.5'N, 122º58.5'W): 1) between Reid Rock and Turn Island, on sand from about 60 m in summer 1961; 2) at a nearby station in rather clean sediment mostly made of broken shells, from about 100 m, in summer 1962