Shell broadly fusiform basally, becoming after the penultimate whorl very attenuate, and decreasing in bulk speedily in the upper whorls, which are in number ten-eleven, two of which are nuclear and plain, the remainder impressed suturally, somewhat angular, ventricose centrally, plain just below sutures, then angled peripherally, and ornamented with many longitudinal riblets; on the body whorl these are evanescent below the periphery ; from thence to the base are many spiral ridges, coarsely grained, with longitudinal decurrent lines ; the upper whorls similarly decorated, but, as aforesaid, rapidly decreasing in dimensions. Colour a warm uniform brown throughout. Mouth somewhat expanded, cinereous ; outer lip expanded, internally denticled, sinus not very profound, but well expressed, situate exactly below the suture ; columella straight, base slightly rostrate, thickened, umbilicate. Alt. 25 mm. Diam. : (of central body whorl) 8,50 mm. ; (of sixth whorl) 2,00 mm.
Hab. : Gorgona Isles, off the coast of Columbia, S. America (Hornell).
This ornate species, evidently a Crassispira, is far more attenuate than C. ochrobrunnea described in 1923, though it resembles it in more than one way, especially in sculpture. C. digitalis, Reeve, and ochroleuca Melv. and Sykes, may likewise be compared. The type belongs to Mr. J. R. Le Brockton Tomlin, after whom it is a pleasure to name it.