Description
Author: Jan Delsing
Text ID: 87496
Text Type: 1
Page: 0
Created: 2018-06-15 21:31:57 - User Delsing Jan
Language: EN
Text function: [[t:1250851,textblock=87496,elang=EN;Description]]
Shell rather small and slender. Colour cinnamon-brown, lowest row of gemmules and extremity of canal white, other gemmules pale brown. Whorls fifteen. Protoconch five whorled ; first two together swollen and suhglobose, shagreened, remainder bicarinate by a median furrow and crossed by numerous fine bars which bead the carina?. The adult whorls are beset by first two, then three, and finally four spiral rows of gemmules, eighteen to a whorl, set vertically, gemmule above gemmule, up the spire. Broad furrows ascend vertically from whorl to whorl, deeper than the spiral interspaces which part row from row. The gemmules are lozenge shaped, polished, standing half their length apart and linked to their neighbours in a row by a coloured band smoother and shallower than the remainder of the vertical furrow, of which it forms a part. Between the gemmules the surface is roughened by close fine spiral hair lines. Two unbeaded cords run round the base. Aperture nearly vertical, outer lip bending round a shallow rounded anal notch, then deeply emarginate and finally much produced, crossing the pillar in a spur. Canal short and rather sharply recurved. Length 5,5, breadth 1,75 mm. The lozenge shaped gemmules and the exceptional feature of the longitudinal furrows being deeper than the transverse assist in distinguishing the species.
Hedley,C., 1899. The Mollusca of Funafuti.