F. testa crassa, fusiformi, pyramidata, anfractibus 9, spiraliter striatis, angulatis, noduloso-costatis in anfractibus omnibus 8, prope suturam obso-letis excavatis appressisque; anfractu ultimo 2/3 testae occupante; apertura elongato-pyriformi, superne angulata; inferne canali oblique plus 1/3 aperture aequante; labro columellari reflexo, incrassato, labro externo, attenuato, subdenticulato; cauda incrassata, contorta, reflexa; colore sordidae albido, ore albo. Long., 3,5; lat. max. anfr. ult, 1.2; long, apert. 2,75; long, caud., 0.9 inch. (Forbes.)

It is distinct from any known Fusus. In general aspect it closely resembles a Fasciolaria, but is greatly larger and has no plaits on the pillar lip. The striae which wind round the whorls are grouped in twos and threes. They become very strongly marked and assume the character of sulcations on the caudal portion of the body-whorl. The ribs are mainly developed a little above the centre on the angulated portion of the body-whorl and on the lower halves of the upper whorls, so prominently as to appear like large tubercles. (Forbes.) TYPE in British Museum. Type locality, California coast.
RANGE. Santa Barbara, California, to San Quentin Bay, Lower California, also Japan. Fossil: Pleistocene, San Pedro to San Diego, California.
Described as Fusus kellettii.