Testa eleganter fusiformi, solida, paullum nitente, pallida cinereo-brunnea; anfractibus tredecim, quorum duo apicales nitidi, hyalini, perlaeves, caeteris apud suturas impressis, ventricosulis, infra suturas spiraliter pulcherrime et arcte nodoso-cingulatis, nodulis hie illic rufo-maculatis, deinde fortiter uniliratis, simul ac infra, juxta suturas, bisulcatis, superficie intermedia lata, nitida, longitudinaliter obliquissime costulata, ultimo anfractu caeteros exaequante, infra cingulum liramque spiralem usque ad peripheriam laevi, deinde anguste sulculoso, infra usque ad basim sulculis tornatis, latioribus, liris intermediis regulariter rufo maculatis; apertura oblonga, intus planata, labro tenui, sinu lato, haud profundo ; columella fere recta, canali subprolongato. Long. 64 mm. Lat. 18 mm. Apertura cum canali 28 mm. longa.

This species is remarkable for its regular beaded spiral zone just below the sutures of each whorl, above which are two spiral clearly-cut grooves, the middle of the upper whorls being most beautifully obliquely costulate, the costae terminated above by a double sulcus surrounding a narrow spiral lira. The last whorl, equalling the others in size, is almost entirely grooved and spirally lirate, the lirae below being rufous-spotted. Outer lip thin, perhaps not quite fully developed, sinus well marked but not deep; columella somewhat straight; canal broad and rather prolonged.

Shell large, 60-73 mm. (2,5-3 inches) in height, very solid, narrowly fusiform, with tall spire and relatively long, straight, stout anterior canal, slightly reflexed at its extremity. Spire slightly taller than height of aperture plus canal. Whorls 11, plus a small, erect, broadly conical protoconch of 2,5 smooth whorls. Spire-whorls with a massive broadly rounded subsutural fold densely sculptured with cog-like axials. Shoulder concavity narrow and deep, with a median-placed, strong, smooth spiral cord. Peripheral carina at about middle whorl height, broadly rounded, strong on the early whorls and crossed by protractively oblique axial folds. The peripheral carina and its sculpture both become subobsolete over the last two whorls, but the subsutural fold remains strong throughout. The entire surface below the peripheral carina is deeply incised, forming flat-topped broad spirals, three below the periphery on the spire and 6 or 7 on the upper base. Below these the spirals change in character to strong narrow crested cords with interspaces of a width rather greater than that of the cords. About 8 or 9 of these cords are present over the neck. Below are weaker indistinct irregular spirals on the anterior fasciole. Colour pattern of very diffused and indistinct reddish brown axial flames on a pale yellowish brown ground. Owing to the incised surface the colour flames appear as an irregular tessellation of the flat-topped spirals and the cords of the base and neck. Sinus and operculum both identical with those of T. catena.

This species may be considered to be a bathymetric derivation from the shallower water catena. It is characterized by a much stronger sculptural development. The spiral incised lines extend over all the adult whorls. The subsutural fold is massive and densely crenulated, and the shoulder concavity bears a single, strong, smooth spiral cord.

Persian Gulf. Gulf of Oman.