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. 



Key to the Small Red Chitons (^ to i inch) 

 Girdle naked: 



Valves dull, color pattern maculated To7iicella marmorea Fabr. 



Valves glossy, with bright, black and white lines 



Tonicella lineata Wood 



Girdle with scales: 



With overlapping, split-pea scales Lepidopleurus cancellatus Sby. 



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