Shell large, estimated at about 106 mm. (4,25 inches) in height. Spire tall, greater than height of aperture plus canal (anterior end missing in the unique holotype). Post-nuclear whorls 8 (protoconch missing). Whorls inflated, without a peripheral angulation, but there is a moderately wide subsutural concavity. Sculpture of numerous narrowly rounded but rather strong protractively obliquely arcuate axials, which do not reach the lower suture. The whole surface is crowded with fine crisp spiral lirae. Height 93 mm; width 35 mm.

The figure of this species, which was referred to Pontiothauma by von Martens (1903), suggests by the growth lines, a rather deep turriculid style sinus, quite foreign to that of Pontiothauma, which has at most, a very weak sutural sinus. Martens' species seems to be somewhat allied to Schepman's Spergo sibogae from near the Kei Islands, Indonesia in 560 metres. Both species fit reasonably well into the genus Comitas.