. A manual of zoology. Fig. 176. — Cypraea moneta (Cowrie). Showing the mantle, provided with marginal tentacles, partly enveloping the shell. Br, branchia; M, M, mantle; F, foot; T, tentacles at the edge of the mantle. (From Cooke, after Quoy and Gaimard.) by wave-like contractions of the muscular tissue. In the typical Gastropods the foot is usually distinguishable into three parts, a middle part or mesopodium which is the most. Fig. 177.—Doris (Archidoris) tuberculata. a, anus; br, branchia; m, penis; rh, rh, tentacles. (From the Cambridge Natural History.) important, with a smaller anterio
. A manual of zoology. Fig. 176. — Cypraea moneta (Cowrie). Showing the mantle, provided with marginal tentacles, partly enveloping the shell. Br, branchia; M, M, mantle; F, foot; T, tentacles at the edge of the mantle. (From Cooke, after Quoy and Gaimard.) by wave-like contractions of the muscular tissue. In the typical Gastropods the foot is usually distinguishable into three parts, a middle part or mesopodium which is the most. Fig. 177.—Doris (Archidoris) tuberculata. a, anus; br, branchia; m, penis; rh, rh, tentacles. (From the Cambridge Natural History.) important, with a smaller anterior propodium and posterior mctapodium. The whole foot becomes reduced in a few Gastropods that remain fixed. The metapodium very fre-. 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 Parker, T. Jeffery (Thomas Jeffery), 1850-1897; Haswell, William A. (William Aitcheson), 1854-1925. New York, The Macmillan Company; London, Macmillan & Co. ,Ltd.
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