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CANCELLARIIDAE 2 5 3
Genus Narona H. and A. Adams 1854
Subgenus Progabbia Dall 191
Narona cooperi Gabb Cooper's Nutmeg
Monterey, California, to Lower California.
8
Plate 24y, figure 55c
2 to 2/4 inches in length, moderately heavy; columella with 2 small
spiral folds. Whorls slightly shouldered, with about a dozen to 15 narrow
axial ribs which at the top bear a single, low, sharp knob. Color brownish
cream with a dozen or so narrow, brown spiral bands. Aperture orange-
cream. Outer lip sometimes with numerous white, glossy, spiral cords on
the inside. An uncommon, deep-water species, occasionally brought up in
fish nets. Said to grow to 7 inches in length.
Genus Trigonostoma Blainville 1827
Trigonostoma tenerum Philippi Philippi's Nutmeg
Southern half of Florida.
Figure 55d
% inch in length, fairly thin, but a quite strong shell. 4 whorls, strongly
shouldered with the upper part of the whorl smooth and flat, and the sides
with 3 to 5 spiral rows of strong nodules or blunt beads. Umbilicus very
deep and funnel-shaped. Color light orangish brown. Uncommon just off-
shore.
Trigonostoma rugosuin Lamarck (in the subgenus Bivetiella Wenz 1943)
is similar, but heavier, whitish with brownish maculations, without an umbili-
cus, and with about 8 strong axial ribs crossed by spiral threads. Known as
the Rough Nutmeg. It is rare in most areas of the West Indies, and has not
been reported from the United States.
Admete couthouyi Jay
Genus Admete Kroyer 1842
Common Northern Admete
Arctic Seas to Massachusetts. Arctic Seas to San Diego, California.
Figure 55a
% to % inch in length, moderately thick, with 6 whorls. Suture wavy,
well-impressed. Sculpture coarsely reticulate, often beaded or with the axial
cords the strongest. Columella strongly arched and bearing 2 to 5 very weak,
spiral folds near the middle. Shell dull white, covered with a fairly thick,
gray-brown periostracum. Commonly dredged in cold waters. There are
several other deep-water species on both of our coasts but they occur in
very deep water.