AS Colubraria alfredensis Bartsch, 1915
Shell elongate-conic, white, banded and lined with rust brown. A series of short protractive streaks extend from the summit down on the posterior fourth of the whorls. The streaks are about one-half as wide as the spaces separating them. A spiral line of interrupted dashes extends about the whorls a little posterior to the sutures, while a broad dull rusty belt covers the anterior half between the sutures and another, equally wide, the middle of the base. In addition to these decided markings there are others less strongly defined, all of varying shades of rust brown. Nuclear whorls decollated. Postnuclear whorls moderately rounded, appressed at the summit and slightly constricted at the sutures, marked by low, poorly defined, and irregularly placed varices and many, very regular, and regularly, closely spaced, slender, raised, axial threads which are about as wide as the spaces that separate them. Spirally the whorls arc marked by about 16 slender threads, between the sutures, which are a little less strong than the axial markings and also less regular. The spaces inclosed between the axial and spiral threads appear as narrow oblong pits whose long diameter coincides with the spiral sculpture. Sutures well impressed. Periphery of the last whorl well rounded. Base pro¬longed, marked like the spire but not as strongly. Aperture strongly channeled anteriorly, posterior angle narrow, obtuse; outer lip thickened by a varix, columella sinuous, covered by a strong, decidedly reflected callus which extends up on the parietal wall.
The type and one other specimen, Cat. No. 187017, U.S.N.M., came from Port Alfred (Coll. No. 551). The type has the last six whorls which measure: Length, 33.5 mm.; diameter, 11.5 mm.