. The biology of the protozoa. Protozoa; Protozoa. DERIVED ORGANIZATION—TAXONOMIC STRUCTURES 165 ent spiral roll of the collar being due to the presence of two pre- hensile tentacles. In some cases two such collars, one within the other, are present as in Salpingoeca entzii or S. marinus (Fig. 92). The second, outer, collar in some types is regarded by Doflein as a periplastic rigid structure which forms a part of the cup or. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrati
. The biology of the protozoa. Protozoa; Protozoa. DERIVED ORGANIZATION—TAXONOMIC STRUCTURES 165 ent spiral roll of the collar being due to the presence of two pre- hensile tentacles. In some cases two such collars, one within the other, are present as in Salpingoeca entzii or S. marinus (Fig. 92). The second, outer, collar in some types is regarded by Doflein as a periplastic rigid structure which forms a part of the cup or. 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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