. The British freshwater Rhizopoda and Heliozoa. Rhizopoda; Heliozoa; Freshwater animals. PSEUDODIFFLUGIA AECHERI. 121 Length 55-110 ju, (Penard gives 50-170 ju, as the limits of length and 80-100 fi as the usual size). Habitat.—Deep lakes and aquatic vegetation. England.—Shrewsbury, Shropshire; Devonshire; Cornwall. Wales.—Bodelwyddan, Flintshire. Ireland.—Clare Island and Roonah, Mayo. The test is characterized by its thick covering of amorphous silicious particles arranged like a mosaic in the cementing medium, each small particle being isolated from its Fig. 154 —Fseudodifflug


. The British freshwater Rhizopoda and Heliozoa. Rhizopoda; Heliozoa; Freshwater animals. PSEUDODIFFLUGIA AECHERI. 121 Length 55-110 ju, (Penard gives 50-170 ju, as the limits of length and 80-100 fi as the usual size). Habitat.—Deep lakes and aquatic vegetation. England.—Shrewsbury, Shropshire; Devonshire; Cornwall. Wales.—Bodelwyddan, Flintshire. Ireland.—Clare Island and Roonah, Mayo. The test is characterized by its thick covering of amorphous silicious particles arranged like a mosaic in the cementing medium, each small particle being isolated from its Fig. 154 —Fseudodifflugia archeri. x 200. The crystals found in the plasma are considered by Penard to consist of some organic compound; owing to the opacity of the test the contents are not visible vmless the specimen is immersed in oil of cloves or Canada balsam. The plasma and contractile vesicles, etc., cannot be studied in the living animal unless they happen to be protruded from the aperture. 5. Fseudodifflugia compressa (Schulze) Penard. (Plate LII, figs. 9-11.) - Pleurophrys compressa Schulze in Aroli. mikr. Anat. XI (1876), p. 125, pi. vii, fE. 4, 5. Archee in Qrt. Jrn. Micr. Sci. (n. s.) YII, p. 204, pi. xiii, ff. 9a, 9b; in Proo. Dubl. Micr. Olub, III, 3 (1880), pp. 273-274, , if. 9a, 96. Fseudodifflugia compressa Penabd Panne Rhiz. Leman (1902), pp. 458-459, 2 figs.; Sarcodines in Cat. Invei'.t. Suisse (1905), p. 93. AvEEiNTZEFP Iq Ti'udui Obslich. XXXVI, ll (1906), p. 275. ScHoriEDEN in Ann. Biol, lacustre, I (1906), pp. 363, 364. Wailes & Penaed in Proc. R. Irish. Acad. XXXI, Lxv (1911), p. 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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