Image from page 272 of “West American shells; a description in familiar terms of the principal marine, fresh water and land mollusks of the United States found west of the Rocky Mountains, including those of British Columbia and Alaska ..” (1904) – more Marine Life goodness curated by www.SardineRunPE.co.za
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Title: West American shells; a description in familiar terms of the principal marine, fresh water and land mollusks of the United States found west of the Rocky Mountains, including those of British Columbia and Alaska ..
Year: 1904 (1900s)
Authors: Keep, Josiah, 1849-1911
Publisher: San Francisco, The Whitaker & Ray company (incorporated)
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Smithsonian Libraries
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Text Appearing Before Image:
gth, 27 to 40mm.This species lives in the Atlantic and also in theNorth Pacific. Tonicella suhmarmorea, Midd., the Red-spottedChiton. Valves rather depressed, apparentlysmooth, microscopically full of granules; color,rosy or yellowish white, painted with spots andfiamules of red; length, 38mm. From, FucaStrait past Aleutian Islands to Japan. Trachydermon (Cydnoplex) hartwegi, Cpr.,Hartwegs Cliiton, (Chaetopleura hartwegi), hasa low oval shell, very closely and microscopicallygranulated, and bears wart-like granules irregu-larly scattered over the surface. Externally, dull,olive green; internally, intense blue-green; length,about an inch. Found along the whole coast fromVancouver Island southward. Chaetopleura gemmea, Cpr., the Gem Chiton, isfound at Monterey, Cal. The shell is oblong, ele-vated, red, olive-ashen, or yellow. The girdle isnarrow, leathery, sparsely clothed with short hairsthat are easily rubbed off. The valves are notsmooth; length, 16mm. PIERCED SHELLS AND CFIITONS 265
Text Appearing After Image:
IscJinochiton magdalenensis,Hds., the Gray Chiton, Figure296, (Stenoradsia magdalen-ensis). This large and verycommon Chiton may be foundunder rocks at low tide, andcan at once be recognized byits worn or roughly sculptured,low-arched valves, which arewhitish internally, and gray orsomewhat tinted externally.The mantle border is darker,and is covered with minute,solid scales. The foot of theanimal is yellow. Wlien taken ^s ^^^ from the rock it has a habit of curling up into a))al]. The figure represents a good-sized specimen. Ischnochiton conspicuus, Cpr., the ConspicuousChiton, resembles the last species, but is larger,more richly colored, with pinkish valves, while themantle is densely beset with short bristles, givingit a velvety appearance. The length of this south-ern species is sometimes over 90nnn. Ischnochiton mertensii, Midd., the Red Chiton,(Lepidopleurus mertensii), has an oval, elevatedshell, with angular dorsal ridges and straight sideslopes. The color is red, varying fro
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