. Elements of zoölogy. Zoology. 56 MOLLl/SCA. Mussels {Mytilidcz).—The black mussels with their silvery interiors are the common forms on the rocks of the Eastern Shore. They are covered with a thick leathery skin, the hinge being without teeth. They are remarkable for their climbing powers (Fig. 58, M). By means of their foot, /, they fasten a silken cord to the rocks, then another, and by continually stretching out cables ahead or Fig. 58.—Group of headless mollusks. c, cardium springing; M, mytilus ; s, pecten; J?, razor-fish, solen; _/, foot; /, anchoring-threads; st\ breathing-si
. Elements of zoölogy. Zoology. 56 MOLLl/SCA. Mussels {Mytilidcz).—The black mussels with their silvery interiors are the common forms on the rocks of the Eastern Shore. They are covered with a thick leathery skin, the hinge being without teeth. They are remarkable for their climbing powers (Fig. 58, M). By means of their foot, /, they fasten a silken cord to the rocks, then another, and by continually stretching out cables ahead or Fig. 58.—Group of headless mollusks. c, cardium springing; M, mytilus ; s, pecten; J?, razor-fish, solen; _/, foot; /, anchoring-threads; st\ breathing-siphons ; e, eyes of scallop. and lifting and breaking off those below, they climb or warp themselves along very much as does a ship on a lee- shore ',217 living and 350 fossil species are known. Value.—The edible-mussel fisheries afford employment to many persons in Europe. Fresh-Water Mussels (Umonida). — These are pond, river, and lake mussels, resembling in appearance the edible mussel, black without and pearly within, tinted with iridescent hues. About 550 living species are known throughout the world, and 60 fossil. The sexes are dis- tinct. The young are held in the gills of the mother in. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Holder, Charles Frederick, 1851-1915; Holder, Joseph Bassett, 1824-1888, joint author. New York : D. Appleton and company
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectzoology, bookyear1884
