OCR Text |
Show 772 PROF. T. H. HUXLEY ON THE CLASSIFICATION [Jline 4, Fig. 7. br Astacoides madagascariensis. I. The outer face of the podobranchia of the antepenultimate thoracic limb of the left side (X 2£). II. The inner face of the same : br, branchial filaments. III. A transverse section of the middle of the podobranchia: st, the grooved inner face of the stem. IV. The terminal hook of a branchial filament; and V. The apex of a coxopoditic seta. The straight line represents ji^j ? of an inch magnified to the same extent, as these. |