. 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 ... with a brown epidermis, which is laid onin little ridges, resembling a coating offine, soft cloth. This species lives in thesouth, while another one, Macron Kellet-tii, A. Ad., Kelletts Macron, is moreFig. 178 commonly found on the coast of Lower California. It has a larger shell, which is of a darker color. The aperture is very large, the outer lip thin, and the canal a mere not
. 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 ... with a brown epidermis, which is laid onin little ridges, resembling a coating offine, soft cloth. This species lives in thesouth, while another one, Macron Kellet-tii, A. Ad., Kelletts Macron, is moreFig. 178 commonly found on the coast of Lower California. It has a larger shell, which is of a darker color. The aperture is very large, the outer lip thin, and the canal a mere notch. Its length is rather more than an large shell shown in Figure 179 comes from northern Alaska, and has received several names. It will be safe, how-ever, to call it Vol- vtSpsws hohelti, Dall, Kobelts Vol- utopsius. It is not a common shell, and the specimens that are collected are often beacli- worn, but the pic-ture represents a perfect specimen. Its full length is about four inches. Volntopsius castaneus, Morch, the Chestnut Volutopsius, is found more abundantly than the last species. It lives in shallow water off the. Fig. 179, X i (*) MARINE UNIVALVES 181 Aleutian Islands, It is of a brownish color andhas no epidermis. The aperture is large, the sur-face rough, and destitute of any spiral is about the same size as the last species. Volutopsius attenudtus, Dall,the Slender Volutopsius, shownin Figure 180, comes from Beringfi> va Htrait and the adjacent Arctic waters. The shell is thin, white,and delicately striated. Theleuiith is 58 millimeters.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectmollusks, bookyear190
