. The British freshwater Rhizopoda and Heliozoa. Rhizopoda; Heliozoa; Freshwater animals. 14 BEITISH FKBSHWATBR RHIZOPODA. 2. Arcella catinus Penard. (Figfi. 162 and 163.) Arcella vulgaris Leidt (pars) Freahw. Rhiz. N. Amer. (1879), p. 171, pi. xxviii, ff. 6, 7. jl '^ppi i ft PCi TTYi^iR Pbnakd in Mem. Soc. Geneve, XXXI (1890), pp. 154-155, pi. v, f. 87. Lageehbim in Geol. Foren. Stockholm Torh. XXIII (1901), p. 507. Beown in Ann, Scott. Nat. Hist. 1911, p. 228; in Naturalist, 1912, p. 180; in Scott. Natur. 1913, pp. 186, 206. Wailbs & Penaed in Proc. R. Irisli Acad. XXXI, Lxv (1911), pp.


. The British freshwater Rhizopoda and Heliozoa. Rhizopoda; Heliozoa; Freshwater animals. 14 BEITISH FKBSHWATBR RHIZOPODA. 2. Arcella catinus Penard. (Figfi. 162 and 163.) Arcella vulgaris Leidt (pars) Freahw. Rhiz. N. Amer. (1879), p. 171, pi. xxviii, ff. 6, 7. jl '^ppi i ft PCi TTYi^iR Pbnakd in Mem. Soc. Geneve, XXXI (1890), pp. 154-155, pi. v, f. 87. Lageehbim in Geol. Foren. Stockholm Torh. XXIII (1901), p. 507. Beown in Ann, Scott. Nat. Hist. 1911, p. 228; in Naturalist, 1912, p. 180; in Scott. Natur. 1913, pp. 186, 206. Wailbs & Penaed in Proc. R. Irisli Acad. XXXI, Lxv (1911), pp. 14, 20. "Wailes in Scott. Natur. 1912, p. 60. Platpaie in Proc. Linn. Soc. N. S. Wales, XLII, 4 (1918), p. 640, pi. xxxiv, f. 12. Arcella artocrea Penaed Paune Rhiz. Leman (1902), pp. 404-406, 5 figs.; Sarcodines in Cat. Invert. Suisse (1905), p. 80. (Non Arcella artocrea Leidy, 1879.) Arcella vulgaris var. compressa Cash Brit. Preshw. Rhiz. I. (1905), pp. 138-139, Wailes in Jm. Linn. Soc, Zool. XXXII (1912), pp. 123, Fio. 162.—Arcella catinus. I, upper view ; 2, oral view ; 3, side view in outline, x 280. 4, Usual appearance of the surface of the test; 5, part of the test near the aperture, with two pores. x 1000. (After Penard.) This is the saaie as A. vulgaris var. compressa Cash described in Vol. I; it may we think be legitimately- considered an autonomous species. In the British. 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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