Distinctive features are 1) fusiform-ovate, moderately high-spired shell attaining 54 mm in height, 2) protoconch usually eroded, apparently paucispiral, naticiform, 3) teleoconch whorls convex, somewhat shouldered at the adapical one third, meeting at slightly impressed sutures, 4) body whorl oval, rather quickly tapering at the base toward a short, twisted neck, 5) fasciole distinct, 6) aperture oval, siphonal notch upturned, outer lip weakly dentate and lirate within, 7) earlier whorls sculptured with 3 spiral cords and collabral riblets forming a square-reticulated pattern; subsequent whorls with varicose collabral ribs overridden by thin spiral cords; the ribs, 12-13 per whorl, quickly fade away over the shoulder slope that bears only 1-2 spirals. Siphonalia aspersa Kuroda & Habe, 1961, is a related species differing in that has slenderer shell and only 7 collabral ribs per whorl.
DISTRIBUTION AND HABITAT. There are very few mentions of the species, which seems to range from Indonesia to the Gulf of Thailand. WAY & PURCHON (1981) obtained it from trawls on the east coast of Malaya. Live specimens were recovered in the Gulf of Thailand at depths of 10-15 m (SWENNEN et al, 2001).
FOSSIL RECORDS. Pliocene and Quaternary of In-donesia; Holocene of Thailand.