Pterynotus loebbeckei: The shell is moderately large (maximum length 75 mm) and broadly fusiform. The spire is high, consisting of eight or nine convex postnuclear whorls and a protoconch of undetermined nature. The suture is shallow. The body whorl is large and broadly fusoid. The aperture is moderately large and ovate, with a small, very shallow anal sulcus. The outer apertural lip is erect and finely dentate, the denticles extending strongly into the aperture. The columellar lip is adherent above, detached and erect below. The siphonal canal is moderately short, narrowly open to the right, weakly bent to the right, and distally recurved.
The body whorl bears three winglike varices. The margin of each varical "wing" follows the contour of the shell. Each wing is most expanded at the shoulder margin, is attached to the'base of a varix of the preceding whorl, extends almost to the end of the canal, bears a small indentation corresponding to the anterior end of the body, and is richly laminate on its ventral surface. The entire "wing" is finely rippled. Axial sculpture consists otherwise of two rounded, knoblike ridges in each intervarical space. Spiral sculpture consists of numerous minutely scabrous cords, which are strongest on the dorsal surface of the varix.
Shell color is pink to fleshy orange, strongest on the earliest whorls.

Pterynotus loebbeckei: Known only from the type locality, "Oceano Indochinensis" and southeastern Japan.