Text-book of comparative anatomy . s. 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, Aulactinium (Fig. 8),Cannopilus, Challcngeria. CLASS III. Flagellata (Mastigophora). Organisms which are unicel
Text-book of comparative anatomy . s. 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, Aulactinium (Fig. 8),Cannopilus, Challcngeria. CLASS III. Flagellata (Mastigophora). Organisms which are unicellular or united intosimple cell colonies ; properly standing on theboundary line between the animal and vegetablekingdoms, since some groups are directly con-nected morphologically and physiologically withthe lowest plants, others, chiefly by their mannerof taking nourishment (ingestion of solid food),with animals. Furnished during the principalpart of life with one or more vibratile flagella, aperture at the basal pole of the. FIG. 7.—Cortina typus (after Haec-kel) not quite fully drawn, s, Skeletalring; 1, 2, 3, 4, principal rays ; n, nu-cleus ; ot, oil-drops ; pc, podoconus.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectanatomycomparative
