Common Name

"Richard’s Cone"

Status

Regarded as a valid species.

Type Locality

Pointe Sud du Grand Recife, S.W. of Ile de Pins, New Caledonia

Distribution

New Caledonia

Maximum Reported Size

60 mm

Description

Small to medium-sized, light to moderately light. Last whorl conical; outline almost straight; right side may be slightly convex, left side slightly sigmoid. Shoulder carinate. Spire of moderate height; outline concave. Larval shell of about 3 whorls, maximum diameter 1.1-1.2 mm. About first 4 postnuclear whorls tuberculate, following whorls carinate. Teleoconch sutural ramps slightly concave, with closely-set, strong radial threads crossing obsolete spiral striae. Last whorl with wide, axially striate spiral grooves, narrower, weaker or obsolete adapically; 4 closely-set, punctate spiral grooves just below the shoulder.

Ground colour white to beige. Last whorl with about 6-8 broad, brown spiral lines on the ribbons between the basal spiral grooves; occasionally irregular brown blotches in the ground-colour zone. Larval whorls beige. Postnuclear sutural ramps with irregular brown radial blotches. Shoulder edge sometimes ornamented with brown spots.

Periostracum thin, translucent.

Shell Morphometry

L	17-39 mm
RW	0.04-0.08 g/mm (L 17-25 mm)
RD	0.57-0.65
PMD	0.87-0.96
RSH	0.13-0.23

Habitat & Habits

In 300-560 m.

References

• J. Malac. Soc. Aust. 6 (1-2): p. 53, figs 1-4.