Materials examined: STRAMER II, St. 14 (18°50'S, 173°29'W, 2750 m) Dive 18 (July 13, 1989) 2 specimens and Dive 19 (July 14) one specimen. Description: Shell is short, obese fusiform (shell width 55% of length), thin, and fragile. Protoconch is broken and succeeding early teleoconch is heavily eroded. Sutures are moder- ate. Shell surface is white partially covered with grayish straw-colored periostracum which usually remains near the aperture is present. Teleoconch whorls are ornamented by strong spiral ribs which overlies weak growth lines. In the paratype specimens there are about 10 spiral ribs on the penultimate whorl and more than 30 on the body whorl on which ribs. tend to become weaker and more crowded abapically. In the holotype specimen, about 8 ribs are present on the penultimate whorl which is partially water-worn, while about 25 ribs are countable on the body whorl where they become stronger and more widely spaced adapi- cally, while become weaker with narrower space basally. Body whorl occupies about 50% of the whole length. Aperture is wide, lunate with very thin outer lip which is crenulated in accordance with external spiral ribs. Inner lip is smooth and continuous to the almost straight columellar lip. Anterior canal is open not siphonal nor twisted. There is no operculum. Radula is toxoglossate. Lateral tooth empty needle-shaped with basal expansion which is shallowly sinuous. Distal tip is sharply monocuspidate with a slit. Types: Holotype specimen shell length 65.4 mm, shell width 36.1 mm (NSMT-Mo 69950); Paratype #1 51.0 x 26.7 mm (Partially broken when handling) both from Dive 18. Distribution: The North Fiji Basin, 2750 m. This species was not so abundant in vent area in comparison to the preceding whelk. This species is identical with Phymorrhynchus (sic.) sp. reported from the East Pacific Rise (BIOCYARISE, Cyana Dive 37 and 40: 12°49.6'N, 109°56.7'W, 2635 m) by Bouchet and Warén (1989), and probably with "Aulacofusus sp." of Okutani (1964) from Northwest Pacific (non-vent area: 30°58.2'N, 140°38.5'E, 2310 m). Thus this is commonly distributed in upper abyssal ocean floor at depth about 2310-2750 m in Northwest, Southwest and East Pacific. Remarks: This is unusually large turrid. The shapes of tip and basal knobs of radula tooth are not always identical with teeth of Phymorhynchus spp. illustrated by Powell (1966), hence the generic placement of this deepwater, spirally ribbed, thin-shelled turrid may be still tenta- tive until more abyssal turrids will be worked out.