Imperforate, ovate-conic, thin; whitish, ornamented with a sutural line and a basal area of chestnut; spire conical, rather obtuse; whorls 6, nearly flat, the last rounded, about equal to three-sevenths the entire length. Columella straight, ashen. Aperture lunate-oval, milk-white inside; peristome thin, expanded, basal margin forming an angle with the columella. (Pfr.) Alt. 33, diam. 19; aperture, alt. 16, width 11 mill.
Luzon, Philippines.
This seems to be very closely allied to C. subcarinata. I have not seen specimens. Two varieties are recorded: one unicolored white, and another, pale tawny, with darker band at the suture, basal area and peristome black.