Conus granozonatus (Guppy, 1866)

Shell elongate, ornamented with numerous (18) transverse nodose ridges, and longitudinally striated by lines od growth, which are most distinct in the sulcations between the ridges; uppermost keel or ridge on the angle of the whorl bearing larger tubercles; spire elevated, acuminate ⁽³⁾.

Shell moderately small, spire high, conical, shoulder angular. Aperture slightly flaring at base. Outer lip rather strongly retractive, anal notch deep. Anal fasciole deeply concave, bearing strong growth threads. Shoulder of first post-nucleare whorl obscurely tuberculate. Shoulder of later whorl smooth, but on the nest last whorl low truncated tubercles appear and continue to outer lip. Sculpture of body whorl consisting of broad spiral bands separated by narrow grooves and bearing widely spaced beads ⁽⁵⁾.

Leength 32,5 mm. Diameter 14,2 mm. (larger figured specimen)

Type locality: Jamaica

This is the only Bowden cone that starts with a tuberculate shoulder, loses it, and regains it. The broad beaded bands also are a distinctive feature. Young shells of Conus imitator lius have ther same shape and the same kind of anal fasciole. Olsson’s figured specimen has a more concave spire and heavier beads ⁽⁵⁾.

Brown and Pilsbry’s granozonatus from the Gatun formation is tortuosostriatus Toula ⁽⁵⁾.

Two of the three specimens in the Guppy collection labelled “types” of granozonatus represent this species. One of the these specimens is figured. The third is the young shell of consobrinus, also figured ⁽⁵⁾.

Not uncommon at Gatun. While closely related to C. consobrinus, this seems to be a distinct species. In our series from Bowden the C. gracilissimus does not seem distinguishable specifically ⁽⁴⁾.