Afer cumingii is a species of large sea snail, marine gastropod mollusc in the family Tudiclidae.
The length of the shell attains 65 mm, its diameter 30 mm.
(Original description of Fusus couderti in French) The ventricose shell is whitish, marked with irregular ferruginous-brown spots. It features high, fairly acute whorls, totaling eight, each elegantly furrowed and presenting a series of depressed tubercles that form a keel-like structure. The oval-rounded aperture on the right side has crenellations that extend quite far into the interior. The callous columella is furnished at its base with a thick, dentiform fold. The lower end of the shell tapers into a fairly long tail that curves slightly backward at the extremity.[1]
This marine species occurs off Taiwan.[2]