. The crayfish : an introduction to the study of zoology . Crayfish. HOMARUS AND NEPHROPS. 259 fully developed pleurobranchise. Moreover, the bran- chial filaments of these gills are much stiffer and more closely set than in most crayfishes. But the most im- portant distinction is presented by the podobranchise, in which the stem is, as it were, completely split into two parts longitudinally (as in fig. 68, B); one half (ep). C'^st Fig. 68. Podobranchije of A, ParasteCMi; B,M]jhrops; C, FaUemon. A', C, transverse sections of A and 0 respectively, a, point of attach- ment ; al, wing-like expans
. The crayfish : an introduction to the study of zoology . Crayfish. HOMARUS AND NEPHROPS. 259 fully developed pleurobranchise. Moreover, the bran- chial filaments of these gills are much stiffer and more closely set than in most crayfishes. But the most im- portant distinction is presented by the podobranchise, in which the stem is, as it were, completely split into two parts longitudinally (as in fig. 68, B); one half (ep). C'^st Fig. 68. Podobranchije of A, ParasteCMi; B,M]jhrops; C, FaUemon. A', C, transverse sections of A and 0 respectively, a, point of attach- ment ; al, wing-like expansion of the stem; i, base; ir, branchial filaments ; ep, epipodite ; I, branchial laminae ; pi, plume-; st, stem, corresponding with the lamina of the crayfish giU, and the other {pi) with its plume. Hence the base (6) of the podobranchia bears the gill in front; while, behind, it is continued into a broad epipoditic plate (ep) slightly folded upon itself longitudinally but not plaited, as in the crayfish. The Norway Lobster {Nephropa norvegicus, fig. 69) s 2. 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 Huxley, Thomas Henry, 1825-1895. London : Kegan Paul, Trench, Tru?bner & Co.
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Keywords: ., bookauthorhuxleyth, bookcentury1900, bookdecade1900, bookyear1906
