Ancilla ordinaria
Ancilla ordinaria, the white-banded ancilla, is a species of sea snail, a marine gastropod mollusk in the family Ancillariidae.
;Variety: Ancilla ordinaria var. major W. H. Turton, 1932: synonym of Ancilla albozonata E. A. Smith, 1904
Description
The shell size varies between 8 mm and 21 mm.This is a small, sub-ovate shell that is pointed above. It has a pale yellowish color, and is adorned with stripes or lines, which are faint, slightly oblique, and obscure; sometimes it is entirely snow-white. It has 4-5 whorls that increase rapidly in size. The spire is short and obtuse at the apex. The body whorl is bisulcate at the front, with the upper groove forming an inconspicuous tooth above the lip, and terminating at the other end at the upper part of the aperture. The lip is thickened and curved above, with a slight incision at its insertion. The columella is callous and reflected at the front and slightly grooved.