Range: Japan to Philippines.

Description: Small to medium-sized, light to moderately solid. Last whorl conical to broadly conical, sometimes ventricosely conical; outline variably convex adapically, straight (right side) or concave (left side) toward base. Shoulder carinate. Spire of moderate height, outline concave. Larval shell of 3 or more whorls, maximum diameter about 0.9 mm. First 2-3 teleoconch whorls tuberculate. Teleoconch sutural ramps flat to slightly concave, with prominent arcuate radial threads and obsolete spiral striation. Last whorl smooth, with a few weak spiral ribs at base or with spiral ribs from base to centre or to shoulder

Colour pale brown to pale violet. Last whorl with about 20 solid or dashed brown spiral lines. Orange or brown blotches form a subcentral spiral band. Additional small spiral bands may occur above centre and below shoulder. A varying number of white spots to blotches may be scattered on entire last whorl. Larval whorls white. Postnuclear sutural ramps white, with brown radial blotches forming darker spots at outer margins; orangish to reddish brown spots very prominent at shoulder. Aperture translucent, pale violet deeper within.

Periostracum brownish grey, thin, translucent to nearly opaque, with tufted radial ridges on sutural ramps and fine axial ridges as well as spiral rows of tufts on last whorl.

Habitat and Habits: Deep water; exact data not available.

Discussion: Emerson & Sage (1987) documented the availability of the name C. spirofilis. C. otohimeae may resemble C. spirofilis, but differs in its narrower last whorl (RD 0.59-0.64) with spiral rows of dots rather than dashed or solid lines and in its more tuberculate early postnuclear whorls (5-7 vs. 2-3). C. memiae may be similar in shape; for comparison, see the Discussion of that species. A specimen from Loyalty Is. (Pl. 52, Fig. 20) resembles C. spirofilis in size and colour pattern but can be distinguished by its narrower last whorl (RD 0.60), straight spire outline, and the spiral grooves on its sutural ramps.

C. spirofilis 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.