Range: Red Sea, S. Persian Gulf, S. E. India to Andaman Is., and S. Indonesia.

Description: Moderately small to medium-sized, light. Last whorl narrowly conical, outline almost straight. Shoulder angulate to carinate, with a deep exhalent notch. Spire of moderate height, outline variably concave. Larval Shell of 3-3.5 whorls, maximum diameter 0.9-1 mm. Early postnuclear whorls often stepped. Teleoconch sutural ramps tlat to slightly concave, with 1-3 increasing to 2-5 partly fine spiral grooves. Last whorl with widely spaced, axially striate spiral grooves separating very flat ribbons and extending from base to shoulder.

Ground colour cream or beige. Last whorl with spiral,rows of brown squarish to rectangular spots on ribbons, often fused into an interrupted spiral band on each side of center. Teleoconch spire matching last whorl in pattern. larval whorls grey to beige. Postnuclear sutural ramps with connected brown radial blotches. Aperture pale brown, sometimes darker deep within.

Periostracum thin and translucent.

Habitat and Habits: In 50-100 m.

Discussion: C. aculeiformis is similar to C. longurionis, C. hopwoodi, and C. elegans. For comparison, see the Discussions of those species.

C. aculeiformis range map

This section contains verbatim reproductions of the accounts of 316 species of Conus from the Indo-Pacific region, from Manual of the Living Conidae, by Röckel, Korn and Kohn (1995). They are reproduced with the kind permission of the present publisher, Conchbooks.

All plates and figures referred to in the text are also in Röckel, Korn & Kohn, 1995. Manual of the Living Conidae Vol. 1: Indo-Pacific Region.

The range maps have been modified so that each species account has it own map, rather than one map that showed the ranges of several species in the original work. This was necessary because each species account is on a separate page on the website and not confined to the order of accounts in the book.