Range: Aden and N. Somalia.
Description: Moderately small to medium-sized, light to moderately light. Last whorl narrowly conical, outline nearly straight. Shoulder angulate to broadly carinate, occasionally undulate in small adults. Spire usually of moderate height, outline concave. Larval shell of about 2 whorls, maximum diameter 0.8- 1 mm. First 2.5-4 postnuclear whorls weakly tuberculate. Teleoconch sutural ramps flat to concave, with closely spaced axial threads and 1-2 increasing to 3-4 spiral grooves; latest ramps may also have spiral striae. Last whorl with rather regularly spaced, axially striate spiral grooves from base to centre or shoulder, separated by ribs basally and by ribbons above.
| Shell Morphometry | ||
|---|---|---|
| L | 26-43 mm | |
| RW | 0.04-0.10 g/mm | |
| RD | 0.45-0.48 | |
| PMD | 0.88-0.96 | |
| RSH | 0.10-0.20 | |
Ground colour pale grey, sometimes suffused with violet or pinkish violet. Last whorl with orange or brown axial clouds, clustering on each side of centre and below shoulder. Spiral rows of alternating white and orange to brown dots and dashes extend from base to subshoulder area. Larval whorls white. Teleoconch sutural ramps with orange to brown radial markings that cross the outer margins. Aperture pale pinkish orange.
Habitat and Habits: Reported from upper subtidal.
Discussion: C. traversianus is similar to C. stocki, C. lizarum, and C. dictator. C. dictator is almost twice as heavy, tends to have a broader, more ventricose last whorl (RD 0.47-0.60; PMD 0.83-0.93) as well as a higher spire (RSH 0.17-0.26), has more distinctly tuberculate postnuclear whorls (4-7), and the spiral rows on its last whorl lack intermittent whte markings. For comparison with C. stocki and C. lizarum, see the Discussions of those species.
C. traversianus 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.