Image from page 96 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:
he most important species onthe whole list, if we think of the mollusks only asfood for man. Mya arendria, Linn., the CommonMya, or Rhode Island Clam, was known in Europeand on the Atlantic Coast long ago, and was highlyesteemed as an article of food, whether it werefried, steamed, or made the basis of a chowder.It was unknown in San Francisco Bay until 1874,when a few specimens were discovered near Oak-land, which were named Mya hemphilli, Newc, inhonor of the veteran collector, Mr. Henry Hemp-hill. In a little time, however, its true nature be-came known, and conchologists realized that theAtlantic Mya had crossed the continent, doubtlesswith seed oysters from Chesapeake Bay, and hadsettled down in the western waters. Unlike thearistocratic oyster, which propagates but slowlywith us, the more plebian clam began to fill themud-flats on both sides of the bay with its bur-rows, and even ventured outside the Golden Gateand began its march up and down the coast. OTHER BIVALVE MOLLUSKS 89
Text Appearing After Image:
Although not quite so delicious as the oyster,the Mya is an excellent food-mollusk, and is sold in San Franciscoin immense quan-tities. Its do-mains are notfenced in, like theoyster fields, butit may be gath-ered by anybodywho will take thetrouble. Figure79 gives a viewof the inside of a left-valve, showing the spoon-like hinge-tooth, the muscle-scars, and the pallialsinus. The valves are rather thin and brittle; theygape at the ends, and the edges are covered witlia gray epidermis. The common length of grownspecimens is three inches. Mya truncdta, Linn., the Blunt Mya, resemblesthe last, but the siphon end is truncated, as if ithad been chopped oif. This species also lives inthe Atlantic, and is reckoned as circumlwreal, com-ing down on the west side as far as Puget Sound.Cryptomya californica, Conr., the False Mya,lives all along the coast. The shell is elliptical,slightly gaping, nearly smooth, sometimes markedwith faint lines. The sinus is small or obsolete,and the right valve is
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