Carpenter, William Benjamin, 1813-1885 · London : John Churchill · leaf 668
(Eig. 278, a) furnished with a long projectingspine, beneath wMch the fin-feet are put-forth; whilst the METAMOEPHOSES OP DECAPODS. 645 abdomiual segments, narrowed and prolonged, carry at theend a flattened tail-fin, by the strokes of which upon thewater, the propulsion of the animal is chiefly… … Metamorphosis of Ca/rcinus mcenas:—a, first stage; b, secondstage; c, third stage, in which it begins to assume the aduJt form;D, perfect form. chiefly consists ia the separation of the locomotive and respi-ratory functions, true legs being developed from the thoracicsegments for the former, and…
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