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Common Name

"Spindle Cone"

Status

Regarded as a valid species.

Type Locality

Cagayan, Philippines

Distribution

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

Maximum Reported Size

53.8 mm

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.

Shell Morphometry

L	28-38 mm
RW	0.03-0.05 g/mm
RD	0.40-0.47
PMD	0.86-0.95
RSH	0.17-0.22

Habitat & Habits

In 50-100 m.

Discussion

C. aculeiformis is similar to C. longurionis, C. hopwoodi, and C. elegans.

References

• Reeve, L. A., 1844. Monograph of the genus Conus. Conchologia Iconica, 1.
• Röckel, Korn & Kohn, 1995. Manual of the Living Conidae Vol. 1: Indo-Pacific Region.