Text-book of comparative anatomy . FIG. 5.—Thalassoplanctabrevispicula, part of a sec-tion, after Haeckel. km,Capsular membrane ; ip,intra-capsular; ep, extra-capsular protoplasm ; i\,nucleus; nl, nucleoli; ot, FIG. G.—Phractaspis prototypus (after Haeckel), skeleton. oil-drops ; en, alveolar ca-lymna ; rp, protoplasm ou Skeleton of acanthin, radiating from the centre of thethe surface of the calymna; n m. i • /T?- c\s> Spicules. central capsule. Acanthometra, Phractaspis (tig. 6). ! PROTOZOA B. Osculosa. Central capsule egg-shaped, with a principalchief axis. Skeleton siliceous, always ext
Text-book of comparative anatomy . FIG. 5.—Thalassoplanctabrevispicula, part of a sec-tion, after Haeckel. km,Capsular membrane ; ip,intra-capsular; ep, extra-capsular protoplasm ; i\,nucleus; nl, nucleoli; ot, FIG. G.—Phractaspis prototypus (after Haeckel), skeleton. oil-drops ; en, alveolar ca-lymna ; rp, protoplasm ou Skeleton of acanthin, radiating from the centre of thethe surface of the calymna; n m. i • /T?- c\s> Spicules. central capsule. Acanthometra, Phractaspis (tig. 6). ! PROTOZOA B. Osculosa. Central capsule egg-shaped, with a principalchief axis. Skeleton siliceous, always extra-capsular. Nucleus dividing late. III. Nassellaria.—Capsular membrane simple,a porous area at the oral pole of the chief , Cortina (Fig. 7), Gornutclla. IV. Phseodaria. —Capsular membrane double ;at the oral pole of the principal axis an osculumclosed by a radially striped lid, with a centralopening produced in the shape of a chimney. Acollection of pigment bodies (phaeodium) in thecalymna. Aulosplmra, Aul
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectanatomycomparative
