. 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 ... s in Alaskan waters, and also as far southas the Santa Barbara Channel, in tolerably deepwater. The shell is thin, white, with an olive grayepidermis, and reaches a length of over two was described by Carpenter under the namedementia. Figure 58 repre-sents one of the com-monest shells to befound on the westerncoast. It has re-ceived quite a varietyof names, but it isnow
. 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 ... s in Alaskan waters, and also as far southas the Santa Barbara Channel, in tolerably deepwater. The shell is thin, white, with an olive grayepidermis, and reaches a length of over two was described by Carpenter under the namedementia. Figure 58 repre-sents one of the com-monest shells to befound on the westerncoast. It has re-ceived quite a varietyof names, but it isnow classed as Pa-phiastaminea, Conr.,the Ribbed Carpet-shell, (Tapes staminea). It is one of the fewmollusks sold freely in the San Francisco markets,where it is known as the Hard-shelled Clam. Incolor it varies from pure white to chocolate, andsome of the varieties are prettily marked withchestnut chevrons. Wliile it occurs all along thecoast it is most abundant to the north of SanFrancisco. The name Paphia related to Paphos,one of the haunts of the goddess Venus, for whomso many shells are named. Among the numerousvarieties of this shell we mention var. pStiti, Desh.,the large, unmarked kind found north of the. CHAMA, CARDIUM AND VENUS 73 Columbia River; var. lacinidta, Cpr., a southernform with a beautiful network covering-, and manysmall prickles, (Tapes lacineata). Var. ruderdta,Desh., has distinct, concentric ridges, sometimeslarger than the ribs; var. orbella, Cpr., includesswollen and irregular specimens, living in holesin the rocks, while most common specimens live incoarse gravel and grow to regular shapes.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectmollusks, bookyear190
