Two specimens characterized by 1) discoidal, flat-spired, shining shell 2.5 mm in diameter, 2) protoconch of 2 smooth whorls, the tip slightly sunken, 3) teleoconch whorls with wide, sloping inward shoulder slope, 4) body whorl large, with angular periphery, 5) umbilicus wide and deep, showing earlier whorls, 6) aperture subcircular, in a strongly prosocline plane and with thick peristome, 7) sculpture of sharp spiral keels, 1 over the shoulder angulation, 1 peripheral, 2 basal; 2-3 collabral ribs occur above the periphery just before the aperture. The closely related Circulus teramachii (Habe, 1958) differs in having a less prominent periphery and 1 more basal spiral.

DISTRIBUTION AND HABITAT. The species is so far known from the Gulf of Oman. The original material was recovered from bathyal sand and mud. FOSSIL RECORDS. Holocene of Thailand.