. Costa del mare della vita; gli invertebrati del New York costa. Animali marini. M,OLLUSKS 145 t^^^. Fig-. 104: dieci-KIBBED lumaca. Massachusetts Bay. letteralmente ricopre le rocce in molte parti del nuovo Englanti costa nord di Cape Cod. Essa è più abbondante tra le maree, dove le rocce sono coperte con cirripedi fino- su cui si nutre. Esso varia da Montauk P o i n t, Long Island, all'Oceano Artico, ed è abbondante sulle coste europee per quanto riguarda il sud come il Portogallo. Con noi cresce a circa 1 pollici e mezzo a lungo ma diventa più grande sulle coste settentrionali dell'Europa. È molto variabile in per

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. Sea-shore life; the invertebrates of the New York coast. Marine animals. M, OLLUSKS 145 t^^^. Fig-. 104: TEN-KIBBED SNAIL. Massachusetts Bay. literally covers the rocks on many parts of the New Englanti coast north of Cape Cod. It is most abundant between tides, where the rocks are covered with barnacles up- on which it feeds. It ranges from Montauk P o i n t, Long Island, to the Arctic Ocean, and is abundant on the European coasts as far south as Portugal. With us it grows to be about one and one-half inches long but becomes larger on the northern coasts of Europe. It is very variable in form and color. Some individuals are quite smooth while others are ringed with deep ridges, or have rough, scale-covered shells. Some are dark brown, others white, gray, yellow, dull orange or ringed with combinations of these col- ors. The snails which live upon insolated rooks far off the coast, exposed to the full force of the ocean, are small, and are dark gray in color with dull yellowish bands. Those living on the rocks of protected shores are more variable, both in form and color. The eggs are laid during the summer in little spindle-shaped yellow capsules which resemble minute ten pins set up on their pointed ends. They are placed on the under sides of rocks, or on dead shells. (Fig. '94J. A closely related species fPurpura patulaj from the Mediter- ranean was used to make the Tyrian purple dye used by the Ro- mans for their ceremonial togas. The snails were pounded in a mortar and mixed with water and soda. After a few hours the liquid changes from yellow to deep purple, and may then be used to dye wool or cloth. The Ten-Ribbed Snai], fChiijsodomu.'!decemcostatus, Fig. 104), becomes fully three inches in length. It is yellow-brown in color, and displays ten whorled ridges. It is found off the New England. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrati

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• bookcentury1900
• bookdecade1900
• bookpu
• booksubjectmarineanimals