. A textbook of invertebrate morphology [microform]. Invertebrates; Morphology (Animals); Invertébrés; Morphologie (Animaux). Fig. \S).—Vampyrella (from Haeckel after Butschli). A. Vampyrella feeding upon the stalked diatom Gompltonema. B. Vampyrella encysted upon the stalk of the diatom. them aside and encysts itself upon the stalk previously occu- pied by them. Within the cyst the animal divides into four spores (Fig. 10, B), each of which escapin'g from the cyst becomes a new Vampyrella. Among the Radiolaria spore-formation seems to be the most usual method of reproduction, and a complicati
. A textbook of invertebrate morphology [microform]. Invertebrates; Morphology (Animals); Invertébrés; Morphologie (Animaux). Fig. \S).—Vampyrella (from Haeckel after Butschli). A. Vampyrella feeding upon the stalked diatom Gompltonema. B. Vampyrella encysted upon the stalk of the diatom. them aside and encysts itself upon the stalk previously occu- pied by them. Within the cyst the animal divides into four spores (Fig. 10, B), each of which escapin'g from the cyst becomes a new Vampyrella. Among the Radiolaria spore-formation seems to be the most usual method of reproduction, and a complication occurs among them in that spores of two kinds may be formed. In some cases the spores, which are formed from the intracap- sular protoplasm, are all equal in size (isospores), while in others some of the spores may be large (macrospores) and others small (microspores). Both macrospores and micro- spores may be formed in the same individual, or each indi- vidual may produce only one of the two forms. In such cases it is easy to determine whether one has to do with macro- spores or isospores, which closely resemble each other in 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 McMurrich, J. Playfair (James Playfair), 1859-1939. New York : H. Holt
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