Author: Aschliman, Ebert & Compagno, 2010
Comments: Reported to be a moderately common species of the outer shelf and upper continental slope, 39-545 m deep, but most common between 200 and 500 depth.  Larger individuals tend to occur on the west coast of southern Africa, while those on the south coast are slightly smaller.  The egg case was described to be small, vase-like, measuring less than 50 mm long excluding horns, surface coarsely striated, and with very narrow lateral keels, <1% of maximum egg case width; its posterior horns are approximately 45% longer than the anterior horns, tapering to thin tips, curving inwards and with fine attachment fibers; the anterior horns are hook-shaped, with acute tips (Ref. 85323).