. First lessons in zoology. Zoology. OCEAN ANIMALS : SPONGES, SEA-ANEMONES, ETC. 143 Among the univalved ocean molluscs there is a great variety in the size and shape and coloring of the shells. Many are beautifully colored and patterned; others are oddly and fantastically shaped. The cowries, or porce- lain shells, familiar in collections of ocean curiosities, have a large body whorl and a very short flat spire, and the brightly colored shell looks as if enamelled. Some of the coast tribes of Africa once used, and perhaps still. Fig. 106.—The jjiant squid, Ommatostrephes californica. (From sp
. First lessons in zoology. Zoology. OCEAN ANIMALS : SPONGES, SEA-ANEMONES, ETC. 143 Among the univalved ocean molluscs there is a great variety in the size and shape and coloring of the shells. Many are beautifully colored and patterned; others are oddly and fantastically shaped. The cowries, or porce- lain shells, familiar in collections of ocean curiosities, have a large body whorl and a very short flat spire, and the brightly colored shell looks as if enamelled. Some of the coast tribes of Africa once used, and perhaps still. Fig. 106.—The jjiant squid, Ommatostrephes californica. (From specimen with body (exclusive of tentacles) four feet long, thrown by waves on shore of the Bay of Monterey, California.) use, to some extent, cowries as money. The limpets are among the most abundant of the seashore molluscs, their low, broadly conical shells being plentifully scattered over the rocks between tide-lines (fig. 105). The oyster- drills are molluscs with odd spiny shells, which do much harm by settling down on the oysters, boring holes through the shells, and eating the soft parts within. The helmet-shells, from which shell cameos are cut, are composed of layers of shell material of different colors. Among the specially beautiful shells are the cone-shells, the olive-shells, the ivory-shells, 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 Kellogg, Vernon L. (Vernon Lyman), 1867-1937. New York, H. Holt and Company
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