TYPE MATERIAL Holotype (MNHN-IM-2000-34810) dim. 2.20 × 0.72 mm. Protoconch 0.39 × 0.23 mm. stn GB08. TYPE LOCALITY Caribbean: Guadeloupe, South Rocroy sud. 17 m.
DISTRIBUTION Guadeloupe. MATERIAL EXAMINED Station of Guadeloupe: stn GB08, Rocroy Sud, 17 m, spm 1.
DESCRIPTION Shell small, conical elongated with moderately impressed sutures. Protoconch conical of about 4.5 smooth convex whorls; color yellowish, transparent. Teleoconch of 6 whorls with sculpture of 3 spiral cords (1 and 2 closer in first whorls), crossed by axial ribs, about 20 on last whorl; beads at each in- tersection. A fourth beaded cord is emerging at the base of the last whorl from the insertion of the outer lip; border between columella and base highlighted by a weak cord. Columella short and broad, obliquely truncated, with a surface crossed by thin crisp threads, aperture incomplete. Background color yellowish, columella darker.
COMPARISON We only had one specimen of Cerithiopsis desjobertae n. sp. Concerning size, shape and color it can easily be confused with Cerithiopsis parvada Rolán, Espinosa & Fernández-Garcés, 2007, from which it differs by its smooth and unsculptured protoconch.
ETYMOLOGY Named after Nathalie Desjobert, finance officer at MNHN, in recognition of her enthusiasm and understanding of the Museum expeditions program.