The shell is large (maximum length 32 mm) and coarsely biconic. The spire is high and acute, consisting of six or seven angulate postnuclear whorls and a protoconch of undetermined nature. The suture is impressed and somewhat obscured. The body whorl is moderately large and roughly trigonal. The aperture is small and subcircular, with an almost entirely erect peristome, the posterior end being adherent. Each anal siphonal tube is moderately long, hollow, dorsally and posteriorly oriented, and buttressed by a vertical flange, the partition, that arises from the shoulder margin at the site of the preceding varix. The siphonal canal is sealed, and broad for most of its length; the distal portion is slender, tubular, and sharply dorsally bent.
The body whorl bears four thin, sharp varices, these all, except for the most recent varix, low to obsolete. The most recent varix, broadly alate and barely dorsally reflected at its free edge, extends from the shoulder margin to near the distal end of the canal. At the shoulder margin each varical wing is extended posteriorly and slightly dorsally to form a weak shoulder spine. Spiral sculpture appears to be lacking, except for five faint lines on the leading edge of the last varix. Shell color is white, with random suffusions of fleshy purple-brown. A single narrow brown line encircles the body medially, and the tip of the canal is dark purple-brown; six axially aligned red-brown snots are evident on the outer anertural lip. A thick, flat-white, finely axially striate intritacalx is evident.
Known only from Queensland, Australia (Whitsunday Passage, type locality; off Langford Island)