Description: Shell tall, slim, strictly conical, white with sharp apex. Whorls almost straight in profile. Suture shallow, no subsutural shelf, forming an angle of about 75 to shell's main axis. Sculpture consisting of rather distinct axial ridg- es, and combination of fine spiral striae and axial ripples giving impression of surface of a metal file. Striae and ripples only visible within interspaces. Axial ridges thin, interspaces more than twice as broad. Sculpture ending abruptly at base of last whorl. Protoconch of type A-II, forming an angle of about 100 to main axis of shell. Diameter about 360 μm. Aperture, rhomboid, tending to squarish. Outer lip arising at periphery of last whorl, initially following shell's general outline, before turning, rather abruptly, towards columella. Columella straight, slightly broader apiacally. No umbilical fissure. Dimensions: Holotype with 14.5 teleoconch whorls, height 10.3 mm. Type locality: Ivory Coast, Region of Abijan, Gd. Bassam, 35 m.
Distribution: From Senegal to Northern Angola. Depth range 10-100 m. Etymology: Scrobiculatus, Latin for pitted. Remarks: The combination of longitudinal and spiral ornamentation in the inter- spaces is not common in Turbonilla. Turbonilla hamonvillei Dautzenberg & Fischer, 1896 from the Azores has a similar arrangement of the sculpture, but the two syntypes in the Monterosato collection in Rome differ from T. scrobi- culata in having broader and more rounded axial ridges, whorls more angulat- ed towards the base, and by a distinctly more tilted protoconch. Turbonilla multilirata (Monterosato, 1875) (see figure in Gaglini 1992). from the Mediterranean Sea, also has crossing spiral and orthocline striations. In this species, however, the striations cover also the axial ridges. Furthermore, the striations are coarser than in T. scrobiculata. It also differs in having broad- er, more rounded axial ridges that continues on the base. Moreover, the proto- conch of T. multilirata is planorboid.