Range: Taiwan and Ryukyu Is.; possibly also in central Japan.

Description: Moderately small. Last whorl conical; outline of right side straight, of left side slightly sigmoid. Shoulder angulate. Spire high, outline almost straight. Teleoconch sutural ramps slightly concave, with 7-8 spiral grooves in later whorls. Last whorl with spiral grooves from base to shoulder, deeper and more closely spaced basally.

Colour white.

Habitat and Habits: Type specimens are probably from a late Pleistocene deposit (Kohn, unpubl. observ.). Recent shells are reported from deep water.

Discussion: C. gratacapii recalls subadult specimens of C. excelsus. However, the latter species has a stepped spire, tuberculate early postnuclear whorls, fewer spiral grooves on the later sutural ramps, a generally more ventricose last whorl (PMD 0.81-0.91) and a distinctive colour pattern of interlaced axial lines and spiral bands on the last whorl and radial blotches on the sutural ramps. Although originally described from 2 subfossil specimens (Pl. 27, Figs. 1, 2) (see also C. comatosa and C. tuberculosus), C. gratacapii is an extant species; a recent specimen (Pl. 27, Fig. 3) (coll. Lyn) from Taiwan agrees completely with the syntypes.

C. gratacapii 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.