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ERATOIDAE 177
^ inch in length, resembling a "beach-worn Columbella," and glossysmooth.
Body whorl with a large purple area bounded by a faint whitish
line; remainder of shell, including the spire which is often glazed over, is
dark brownish cream. Columella arched, bearing 5 to 8 small, whitish teeth.
Lower % of slightly incurled outer lip is with 7 to lo small, whitish teeth.
Moderately common in fairly shallow water. Occasionally washed ashore
with kelp weed.
Subfamily TRIVIINAE
Genus Trivia Broderip 1837
Resembling miniature cowries (Cypraea), but characterized by strong
wrinkles or riblets running around the shell from the slit-like aperture to the
center of the back of the shell. We have carefully reviewed and included
all of the Western Atlantic species, but have not followed the Schilderian use
of numerous genera, such as Piisiila Jousseaume.
Trivia pediculus Linne Coffee Bean Trivia
3
South half of Florida and the West Indies.
Plate 2ibb
% inch in length, characterized by its tan to brownish pink color with
pairs of large, irregular, dark-brown spots on the back, and in having 16 to
19 (usually 17) ribs crossing the outer lip. The center pair of spots on the
back are the largest. Some specimens may be quite pink.
In some areas, a dwarf form of this species occurs (named piillata Sby.)
which is \i inch in length, with a pink base, 13 to 17 riblets on the outer lip,
and often with the brown mottlings spread over most of the back. Do not
confuse this form with the species suffusa which is light-pink, with a white
(not pink) outer lip crossed by 19 to 24 riblets, and with a pink blotch on
each side of the anterior canal.
T. pediculus is a common species found from low water to 25 fathoms.
Trivia suffusa Gray Suffuse Trivia
Southeast Florida and the West Indies.
Plate 2iaa
^ to ^ inch in length, elongate-globular, bright-pink with suffused
brownish splotches and fine specklings. Anterior canal with a weak pinkish
blotch on each side. Riblets on back somewhat beaded. Dorsal groove fairly
well-impressed. Outer lip white and crossed by 18 to 23 (usually 20) riblets.
Quite common in the Bahamas and Lesser Antilles. T. armandina Kiener is
the same.