Antillophos boucheti: Shell up to 28 mm high, thin but solid. Shape rather broad with rounded base and conical spire. Whitish, over yellowish-brown to pale brown. Protoconch whitish, occasionally pale brownish. Ahout 3 to 3 3/4 protoconch whorls, earliest 1/2 to 3/4 whorl smooth and convex, tip (about 1/6 - 1/4 whorl by estimation) eroded or decollate in all studied specimens, last whorls (2 1/2 to 3 whorls) with 2 sharp spiral keels, subsutural slope of last 1/2 or 3/4 part with some semi-lunar axial riblets. Transition to teleoconch marked by last strongly curved, axial rib, followed by broader first teleoconch interspace, ornamented with spiral sculpture.
About 6 or 7 flattened teleoconch whorls. 6 fine spiral cords on first teleoconch whorl, 7-9 on second, 8-11 on third whorl, becoming gradually weaker towards fourth whorl. Penultimate and body whorl smooth. 4-10 spiral cords on base, sometimes alternating well developed or fine. 30-36 hardly visible grooves on siphonal canal. 10-12 high, rather sharp axial ribs on first teleoconch whorl, adapically slightly extending over suture, covering preceding whorl. 11-15 high, rather sharp axial ribs on body whorl, strong along whorl, weaker on base, ending at transition to siphonal canal, with broad interspaces. Aperture triangular. Outer lip adapically thick, abapically sharp. Columellar callus thin, smooth and glossy, with fine internal spiral undulation separating columella from siphonal canal. Both columella and outer lip ornamented with a small and sharp tooth near transition to siphonal canal. Operculum thin, corneous, pale brown. Shape elongate, semi-triangular, abapically pointed with terminal nucleus.

Antillophos boucheti: Phos boucheti is close to P. alabastrum ,but can be distinguished by the more slender shape, by the yellowish colour, by a usual higher number of axial ribs which are more narrow with broader, rather "flat" (instead of concave) interspaces and by the usually presence of spiral cords, still on the fifth whorl.

Antillophos boucheti: Type locality. CHALCAL 1984, stn. D64, Coral Sea, Nova Bank, 22° 1 r50"S, 159°15'40"E, 305 m.
Range and habitat. Known from 3 seamounts south of Chesterfield-Bellona Plateau (southern Coral Sea): Nova Bank, Argo Bank, Capel Bank and from off Tonga Islands. Not yet recorded from Kelso Bank. Bathymetric range 278-500 m with certainty. Empty shells between 272 and 385 m. On Capel Bank living on hard bottom: rocks and coral limestone.