. The British freshwater Rhizopoda and Heliozoa. Rhizopoda; Heliozoa; Freshwater animals. 44. Fiaa. 42-44.—Difflugia acuminata Ehrenb. showing great variation. X 200. Fig. 42.—From pond at Chipperfield, Herts. Fig. 43.— After Ehrenberg, loc. cit. (reduced). Fig. 44.—Var. acaulis Perty. After Perty, loc. cit. Bhrenb. Ehrenberg's name was given to the common large form, which has a nearly cylindrical test, slightly enlarged posteriorly, and is three to four times longer than broad, with an acute apex. Between this—which may be regarded as typical—and the smaller varieties, there is a large grada
. The British freshwater Rhizopoda and Heliozoa. Rhizopoda; Heliozoa; Freshwater animals. 44. Fiaa. 42-44.—Difflugia acuminata Ehrenb. showing great variation. X 200. Fig. 42.—From pond at Chipperfield, Herts. Fig. 43.— After Ehrenberg, loc. cit. (reduced). Fig. 44.—Var. acaulis Perty. After Perty, loc. cit. Bhrenb. Ehrenberg's name was given to the common large form, which has a nearly cylindrical test, slightly enlarged posteriorly, and is three to four times longer than broad, with an acute apex. Between this—which may be regarded as typical—and the smaller varieties, there is a large gradation of forms, some with two or more points. The dimensions of these abnormal forms, which can hardly be regarded as permanent varieties, vary 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 Cash, James, 1839-1909; Hopkinson, John, 1844-1919. joint author; Wailes, George Herbert, 1862-. London, Printed for the Ray Scociety
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