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The Conus Biodiversity Website

CATALOGUE OF RECENT AND FOSSIL CONUS

  Conus mitratus Hwass in Bruguière, 1792.

Range: Entire Indo-Pacific; absent from Red Sea and Hawaii.

Description: Moderately small to medium sized, light to moderately light. Last whorl usually ovate to ventricosely conical; outline convex. Shoulder indistinct. Spire high; outline convex. Larval shell of about 3.5 whorls, maximum diameter 0.70- 0.75 mm. First 3-5 postnuclear whorls tuberculate. Teleoconch sutural ramps flat to slightly convex, with with 1 increasing to 2-6 spiral grooves and some striae; intervening ribs and subsutural ridge pronounced and often granulose. Last whorl with granulose spiral ribs or spiral rows of granules basally or to shoulder.

Shell Morphometry
  L 28-50 mm
  RW 0.04-0.10 g/mm
     (L 29-45 mm)
  RD 0.49-0.57
  PMD 0.62-0.82
  RSH 0.28-0.38

Ground colour cream. Last whorl with light to dark brown blurred axial streaks and blotches and spiral dashes. Pattern elements fusing into a spiral band at centre and a similar but narrower band above base. Apex white to cream; shoulder edges of early postnuclear whorls incl. tubercles sometimes with a light brown band. Later sutural ramps with brown radial blotches. Aperture white.

Periostracum brown, translucent, smooth.

In N. Papua New Guinea, dorsum of foot yellow marginally and on anterior part, with a dark brown blotch at centre of anterior end; median zone with a brown wing-shaped pattern, gradually darker anteriorly. Rostrum white. Tentacles white, with brown tips. Siphon dark brown to black (Chaberman, pers. comm., 1981)(Pl. 76, Fig. 58).

Habitat and Habits: In 1-25 m, in sand pockets among corals and seaweed and on lagoon pinnacles.

Discussion: C. mitratu resembles C. cylindraceus in size and shape. For the distinctions see the DISCUSSION of the latter species.

Range Map Image

C. mitratus 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 Rckel, 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 Rckel, 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.

 

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