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CHAPTER VIII
Coat-of-Mails
and Other Chitons
Class AMPHINEURA
Order LEPIDOPLEURIDA
Family LEPIDOPLEURIDAE
Genus Lepidoplemiis Risso 1826
Lepidopleurus cancellatus Sowerby iVrctic Cancellate Chiton
Greenland to the Gulf of Maine. Bering Sea to Oregon.
^ inch in length, arched; color of exterior an orange-gray to whitish
gray; interior white. Anterior valve microscopically granulated in radial
rows. Central areas of the intermediate valves very finely granulated with
densely placed, round pimples. Posterior valve with a smooth, slightly ele-
vated central apex. Girdle narrow, same color as the valves and densely
packed with tiny, split-pea scales. Some scales are commonly club-shaped,
especially at the margins of the girdle, or sometimes so irregular and crowded
as to give the appearance of fine moss. Moderately common on gravel
bottoms from 20 to 100 fathoms.
Girdle naked:
Key to the Small Red Chitons (^ to i inch)
Valves dull, color pattern maculated To7iicella marmorea Fabr.
Valves glossy, with bright, black and white lines
Girdle with scales:
Tonicella lineata Wood
With overlapping, split-pea scales Lepidopleurus cancellatus Sby.
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