The shell is large (maximum length 39 mm) and broadly biconical. The spire is moderately high, consisting of six or seven angulate postnuclear whorls and a protoconch of undetermined nature. The suture is impressed and obscured by the succeeding whorl. The body whorl is large and broadly, unequally trigonal. The aperture is moderately small and ovate, with a raised peristome. Each very long, hollow anal siphonal tube originates nearer the older of its two adjacent varices and projects dorsally and slightly posteriorly. The siphonal canal is long, bent to the right, broad for the upper third of its length, slender and tubular for the remaining two-thirds, and entirely sealed.
The body whorl bears four sharp varices, each composed of two appressed laminae; the lamina on the receding side extends further outward than the one on the leading side, and on the last varix is moderately strongly dorsally reflected, extending for a considerable distance and forming a broadly winglike structure, strongly dorsally reflected at its free edge and extending anteriorly to the upper end of the canal. At the shoulder margin the last varix is drawn into a dorsally and posteriorly curved spine. In all but the last varix only a posteriorly hooked portion is retained, the remainder having been resorbed. A thickened callus pad at the posterior end of the aperture is backed by an extended perpendicular partition; the anal tube is bent so far dorsally that part of it is appressed to and perhaps buttressed by the partition. Spiral sculpture consists of six faint cords, these visible only on the receding and leading sides of the varices; between varices, they are obsolete.
Shell color is fleshy orange-pink to orange-brown, with paler orange on the leading side of the last varix. The siphonal and anal canals are suffused with purple-brown. The entire shell is covered with a moderately thick, axially striate intritacalx.

Gulf of California (off Guaymas) to Panama Bay.