CANCELLARIIDAE 2 5 3 



Genus Narona H. and A. Adams 1854 

 Subgenus Progabbia Dall 191 8 



Narona cooperi Gabb Cooper's Nutmeg 



Plate 24y, figure 55c 



Monterey, California, to Lower California. 



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 



Figure 55d 



Southern half of Florida. 



% 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. 



Genus Admete Kroyer 1842 

 Admete couth ouyi Jay Common Northern Admete 



Figure 55a 



Arctic Seas to Massachusetts. Arctic Seas to San Diego, California. 



% 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. 



