Description
Author: Jan Delsing
Text ID: 112701
Text Type: 1
Page: 0
Created: 2021-11-22 16:42:17 - User Jan Delsing
Language: EN
Text function: [[t:135827,textblock=112701,elang=EN;Description]]
Description. Shell white, relatively large, up to 10 whorls; costae 10-17 per whorl, low, strong, continuous whorl to whorl, usually lacking small spine at shoulder; suture deep, base rounded. Length 15-38 mm.
Type Locality and Type Specimens. Neah Bay, Clallam County, Washington. Lectotype (designated by Palmer, 1958:187): USNM 15521. Epitonium columbianum: Off Columbia River, Oregon, 27 fathoms; holotype: USNM 111211. Epitonium montereyense: Monterey Bay, California, 30 fathoms; holotype: USNM 111217.
Distribution. Forrester Island, Alaska (55°N), to Bahia Todos Santos, Baja California (32° S) (DuShane, 1979:113).
Habitat. Intertidal to 120 m, soft and rocky bottoms. Occurring below 30 m in southern California.
Remarks. This species is characterized by its large size and moderate number of rounded costae without spines. It is the largest species of Epitonium occurring offshore in southern California. The synonymy indicated here follows that of DuShane (1979:113).
McLean J.H. & Gosliner T.M. (1996) Taxonomic atlas of the benthic fauna of the Santa Maria Basin and Western Santa Barbara Channel. Vol. 9, Pt. 2: The Mollusca: The Gastropoda.