Original description (Dall): Shell minute, recalling one of the minute brackish water species of Bittium. Nucleus blunt, the second whorl with a peripheral keel and seven subsequent moderately rounded, axially and spirally sculptured whorls, the canal almost obsolete. Length 7 mm.


Shell: claviform, slender; with axial folds crossed by narrow spiral cords; light red-brown. Spire: protoconch of one and one-half smooth, low conical whorls followed by two whorls with a sharp median carina; teleoconch of seven whorls; suture shallow. Sculpture: distant axial ribs (about 10 on the last whorl) overridden by three to five narrow spiral cords, the peripheral card and the one below it rendering the axials subspinose. Aperture: narrow, about one-third the length of the spire; siphonal canal short, unnotched, slightly recurved; outer lip thickened; sinus subsutural, deep, U-shaped, constricted by a parietal callus. Color: light red-brown.

C. bittium was described from the Hawaiian Islands. These turrids are found in sediments at depths of from 50 to 100 m.

Length 7 mm; diameter, 2.5 mm.