Plate 2e
Japan, southern Alaska to Point Conception, California.
4 to 6 inches in length, elongate, with a fairly high spire. 4 to 5 holes open which have raised edges. Outside of shell rudely corrugated, but a few specimens may have weak, spiral cords. This is a small species, uncommon in California, but increasingly abundant northward.
Off the Lower Florida Keys.
1⁄2 to 1 inch in length, elongate, with 22 to 27 wavy, spiral cords. Outside waxy yellow to light-brown with a few irregular patches of reddish orange. A light-orange band runs from each hole to the edge of the shell. Inside pearly-white. A very rare species, and the only one recorded from our eastern coast. It has been dredged from 65 to 200 fathoms. Beware of young specimens from other oceans labeled as this species.
Family Fissurellidae
(Keyhole Limpets)
Subfamily Emarginulinae
Key to the Genera of Emarginulinae
a. Apex at the same level as the base of the shell:
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aa. Apex above the base of the shell:
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- cc. Slit at anterior middle:
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Genus Emarginula Lamarck 1801
Plate 17-o
Off North Carolina to eastern Florida and the West Indies.
1⁄3 inch in length, thin but strong, and with a small, narrow slit on the anterior slope of the shell near the margin. Base oval. Color translucent-white. Interior glossy. Concentric cords and 20 to 24 radial ribs cross each
