with rounded, spiral ridges. Sometimes imbricated with small scales (form
named inibricata Lamarck, pi. 256). Color usually dull-white, but sometimes
yellowish, orange or brownish. Rarely with dark-brown or blackish spiral
bands. This species has also been known as Nucella lapillus. For biology see
H. B. Moore (1936 and 1938).
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Figure 48. Pacific coast Dogwinkles. a, Thais emarginata Deshayes; b and c, T. cmialicidata Duclos; d, T. lima Gmelin; e to h, forms of T. lainellosa Gmelin. All about natural size.
Thais lamellosa Gmelin Bering Straits to Santa Cruz, California. Frilled Dogwinkle Figures 48e-h I % to 5 inches in length, solid, usually with a fairly high, pointed spire. Columella almost vertical and straight, not flattened. Size, details of shape, sculpturing and color very variable. White, grayish, cream or orange, some- times spirally banded. Smoothish or with variously developed foliated, axial ribs. Sometimes spinose. A very common rock-loving species. Formerly Purpura crispata Martyn.
