. The biology of the Protozoa. Protozoa; Protozoa. P-i. rr Fig. 12.—Diphasic rhizopods. A, B, C, heliozoa-like and flagellated stages of Dimorpha jnutans. (After Blochman.) D, E, F, Nagleria gruberi, amoeboid and flagellated stages; E, origin of blepharoplast (bl) from endosome; r, rhizoplast. (After C. W. Wilson.). flagellates Phacus lom/icauda, Phacus jryrum, Heferonema sp,, etc., and in the ciliates M(iiiria, Paramecium, Mctopus sigmoidcs, etc., the spiral twist is highly characteristic (Fig. 14), Bilateral symmetry is of rare occurrence among Protozoa; indeed there seems to be only one rea
. The biology of the Protozoa. Protozoa; Protozoa. P-i. rr Fig. 12.—Diphasic rhizopods. A, B, C, heliozoa-like and flagellated stages of Dimorpha jnutans. (After Blochman.) D, E, F, Nagleria gruberi, amoeboid and flagellated stages; E, origin of blepharoplast (bl) from endosome; r, rhizoplast. (After C. W. Wilson.). flagellates Phacus lom/icauda, Phacus jryrum, Heferonema sp,, etc., and in the ciliates M(iiiria, Paramecium, Mctopus sigmoidcs, etc., the spiral twist is highly characteristic (Fig. 14), Bilateral symmetry is of rare occurrence among Protozoa; indeed there seems to be only one really significant case, that of Giardia (Fig. 15). Here the two nuclei, the motor complex, and the eight flagella are arranged in the neatest bilateral manner. In some. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Calkins, Gary N. (Gary Nathan), b. 1869. Philadelphia, New York, Lea & Febiger
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