Shell of medium size for the genus, nuclear whorls two, rounded; postnuclear whorls seven, axial ribs 10, alternating in position on early whorls, but aligned from whorl to whorl on the final three whorls. Suture simple, slightly undulating; shoulder concave; axial ribs well defined across the shoulder, cresting at the periphery, extending across the body whorl and becoming obsolete on the base. Spiral sculpture of closely spaced spiral striae, more crowded upon the shoulder and overriding the axial ribs. Color whitish with a narrow band of flesh pink upon the shoulder and another uninterrupted narrow band across the base. Parietal callus projecting, anal sinus narrow. Lip edge thin, stromboid notch barely perceptible, the second and third ribs behind the aperture coalesced and thickened. Dimensions (in mm): height 13.5, diameter 5.9 mm.

Bellaspira clarionensis differs from B. grippi in reaching a larger size, having a narrower shoulder area, elongate rather than nodular axial ribs, and more numerous spiral striae.

Off Sulphur Bay, Clarion Island, Revillagigedo Islands, Mexico, 18° 20' N, 114° 44' W, 28-45 fathoms on sand, R/V Velero III Station 917-39, 16 March 1939, one specimen. Two additional paratype specimens were dredged at stations 136-34 and 921-39, Sulphur Bay, Clarion Island, 30-35 fathoms.