Bulletin Volume 14-16 (Paperback)

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1912 Excerpt: ...Description.--Shell elongated, slender and fusiform; spire longer than aperture; whorls eleven, very slightly convex; suture very distinct, impressed and linear. Surface ornamented with fifteen prominent longitudinal ribs which extend over all the whorls; these are crossed by twenty-two revolving ribs on the body whorl; between these ribs are broad, deep, flat-bottomed interspaces. Aperture narrow; inner lip highly incrusted; outer lip thin. Canal moderately long. Dimensions.--Altitude 45 mm.; diameter 9 mm.; altitude of spire 28 mm.; angle of spire 23. Occurrence.--At Loc. No. 1 (University of Washington Palaeontological Collection) one and one-half miles east of Sopenah (Little Falls) in bank of Cowlitz River, Lewis County, Sec. 87, T. 11 N., R. 2 W. Horizon.--Cowlitz formation, Upper Eocene. Fusus Lewisensis n. sp. Plate III, Figure 33. Description.--Shell moderate in size, fusiform; whorls eight to nine and somewhat angulated; hody whorl convex in middle portion; nearly straight above and sloping up steeply to the suture. Suture distinct and slightly sinuous. Surface ornamented by eleven not very distinct longitudinal ribs; these are most prominent on the convex portion of the surface; above the angle they are faint and disappear before reaching the suture; they are entirely absent from lower portion of body whorl; they are present on all whorls of spire. The longitudinal ribs are crossed by fifteen distinct revolving ribs, four of which on the convex part of whorl carry sharp spinose nodes; between each of the prominent ribs there are four or five less distinct revolving threads with broad deep interspaces. Aperture moderately broad; inner lip smooth and slightly calloused; outer lip smooth; canal moderately long and bent outwards. Dimensions.--Altitud...