. The biology of the protozoa. Protozoa; Protozoa. 188 BIOLOGY OF THE PROTOZOA Arcella, a diatom or other food body. Ingestion by "circumflu- ence" appears to be due to a stimulus emanating from a living food body, the effect of which through the motor response (Jennings, 1904) is to cause pseudopodia to flow toward the prey and to entrap it while still at some distance from the body of the captor as in the testate rhizopods, Foraminifera and Choanoflagellates where an endoplasmic projection forms a pseudopodium which engulfs the prey and then withdraws within the endoplasm where the
. The biology of the protozoa. Protozoa; Protozoa. 188 BIOLOGY OF THE PROTOZOA Arcella, a diatom or other food body. Ingestion by "circumflu- ence" appears to be due to a stimulus emanating from a living food body, the effect of which through the motor response (Jennings, 1904) is to cause pseudopodia to flow toward the prey and to entrap it while still at some distance from the body of the captor as in the testate rhizopods, Foraminifera and Choanoflagellates where an endoplasmic projection forms a pseudopodium which engulfs the prey and then withdraws within the endoplasm where the prey is. 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, Lea & Febiger
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