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FromThe Crayfish, by T. H. Huxley, 1879

Figure 17

fig. 17, podobranchiae

FIG. 17.--Astacus fluviatilis.--A, one of the podobranchiæ from the outer side; B, the same from the inner side; C, one of the arthrobranchia; D, a part of one of the coxopoditic setæ; E, extremity of the same seta; F, extremity of a seta from the base of the podobranchiæ; G, hooked seta of the lamina; (A--C, x 3; D--G, highly magnified). b, base of podobranchia; cs, coxopoditic setæ; cxp, coxopodite; l, lamina; pl, plume, and st, stem of podobranchia; t, tubercle on the coxopodite, to which the setæ are attached.

[Editor's note: illustration is reproduced here approximately twice the size of the woodcut in the book.]

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