by William Swainson, Zoological Illustrations — Vol I. Pl… (1820)
“ I cannot help considering this as a distinct species from Mitra caffra (Voluta caffra Linn.) , with which it has hitherto been placed only as a variety: it is much larger, the volutions more convex, but compressed on the suture, and the whole shell (except near the point) perfectly smooth: the beak or channel likewise, which in M. caffra is short and nearly straight, is in this lengthened and recurved. The mouth is very narrow (occasioned by the outer lip being thick and slightly inflexed) and smooth within, the terminal volutions slightly plaited, and the base of the shell grooved. ”
