Text-book of comparative anatomy . Fio. 3.—.4. Gromia oviformis after M. S. Schultze. li, Rotalia Freyei-i, after M. S. Schultze., Miliola (after R. Hertwig) the nuclei in the chambers. 6 COMPARATIVE ANATOMY Sub-Class III. Heliozoa. Globular Sarcodina, naked or clothed with a siliceous skeleton, with fine moreor less stiff pseudopodia radiating on all sides. Contractile vacuoles generally present in varying numbers. Actinophrys(Fig. 4), Actinosphcerium, Acanthocystis, Clath-rulina. Sub-Class IV. Radiolaria. Body divided by an originally spherical oregg-shaped capsular membrane into an o
Text-book of comparative anatomy . Fio. 3.—.4. Gromia oviformis after M. S. Schultze. li, Rotalia Freyei-i, after M. S. Schultze., Miliola (after R. Hertwig) the nuclei in the chambers. 6 COMPARATIVE ANATOMY Sub-Class III. Heliozoa. Globular Sarcodina, naked or clothed with a siliceous skeleton, with fine moreor less stiff pseudopodia radiating on all sides. Contractile vacuoles generally present in varying numbers. Actinophrys(Fig. 4), Actinosphcerium, Acanthocystis, Clath-rulina. Sub-Class IV. Radiolaria. Body divided by an originally spherical oregg-shaped capsular membrane into an outer,and an inner, nucleated portion (outer andinner capsules). The outer capsule consists ofprotoplasm (without nucleus) and of a gela-tinous envelope (calymna). The protoplasmforms a layer round the inner capsule and anetwork round the calymna, these two beingconnected by means of protoplasmic threads. FIG. sol, after Gre- Fineflexible pseudopodia radiate in all directionsnacher. p, Pseudopodia ; n, nucleus ; «, x _. , axial filaments of the pseudopodia. flom the surface ot the calymna. Skeletons of extraordinarily various shapes, of silica or of chitin-like organic substance (acanthin), a
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectanatomycomparative
