Diagnosis. Shell ralher small, biconic-fusiform. brownish-grey in colour, with irregular light-brown or brown spots on subsutural fold-peripheral keel, and shell base. Protoconch paucispiral, globose, initial 1,5 volutions smooth, subsequent 1/6 whorl with arcuate axial ribs. Subsutural fold narrower than the peripheral keel; both sculptural elements rather weakly gemmulate. Spiral cords rather prominent, often with subrectangular profile, with interspaces narrower than the cords, weakly granular. Columellar pleat distinct. Anal sinus deep, U-shaped.

Description of holotype. The shell is biconic-fusiform and rather thick and strong. The protoconch is globose, greyish-white, and consists of smooth and glossy 1.5 initial volutions and 1/6 whorl covered by arcuate axial ribs. The border between protoconch and teleoconch is indistinct. The teleoconch consists of 6.5 low whorls separated by channelled sutures. The spire has a flat profile. The whorls bear a rather wide subsutural fold and a moderately strong peripheral keel. The subsutural fold is narrower than the keel. Both sculptural ele-ments become more flattened towards the body whorl. They are covered by gemmules which have the shape of blunt tubercles on initial whorls, but become longitudinal and more obsolete towards the body whorl. Gemmules on the peripheral keel become arcuate. Gemmules on these sculptural elements more or less correspond to each other. There are 25 gemmules on the penultimate and 30 on the body whorl. The subsutural fold bears one spiral cord on its adapical part. The peripheral keel is generally smooth in its central portion, but two very indistinct spiral cords are discernible on parts of it only. The keel is bordered by 2-3 narrow cords. The space between subsutural fold and the keel is rather wide, slightly excavated, and bears 1 (on initial whorls) or 2 strong spiral cords. The keel on initial whorls is set close to the lower suture, and the distance between the suture and the keel is even less than that between the keel and subsutural fold. However, the keel position becomes higher towards the body whorl, and on the penultimate whorl the keel is rather distant from the suture. There are 3 cords below the keel on the penultimate whorl. The body whorl comprises about 60% of the shell height. Below the keel it is covered by strongly unequal, wavy, spiral cords with subrectangular profile. The cords are separated by narrow interspaces which do not exceed the cord width. Towards the canal the width of the cords becomes more uniform. The cords are very weakly granular at intersections with growth lines, only near the aperture does the granulation become more distinct. The aperture is narrow, it gradually narrows to the short and obliquely truncated canal. The inner lip is covered by a thick white callus with longitudinal wrinkles near its edge. The columellar pleat is distinct and obliquely encircles the columella. The outer lip projects strongly forward below the sinus. The anal sinus is deep. Judging from growth lines, it is U-shaped, with almost parallel sides. However, the actual sinus is strongly constricted at the entrance, probably due to damage and repair of the outer lip. The edges are slightly reflexed.
Shell height 14.5 mm, body whorl height 8.9 mm, aperture height 6.9 mm, shell diameter 5.8 mm.
The shell colour is brownish-grey, with irregular light-brown spots on the subsutural fold, peripheral keel, and shell base.

The paralypes are smaller (13.8 x 5.2 and 12.9 x 4.8 mm). The diameter to height ratio is 0.37 to 0.40. They are basically similar to the holotype, but the paratype from sta. 345 has a more strongly gemmulate subsutural fold and peripheral keel, and brown spots on the shell.
This species is most similar to G. neocaledonica, but differs in having a paucispiral protoconch, flattened, closely-set, strongly unequal spiral cords with only weak nodules at intersections with growth lines. The subsutural fold in the former species is narrower than the peripheral keel and separated from the latter by a wider space covered by spiral cords.

Distribution. Chesterfield Islands and north of New Caledonia, dead at 305-350 m.