. The British freshwater Rhizopoda and Heliozoa. Rhizopoda; Heliozoa; Freshwater animals. PONTIGULASIA COMPRESSA. 63 also near Criccietli and in the Sychnant Pass, North Wales. South Devon, 1864 (H. J. Garter). Loch Ness (D. J. Scourfielcl). Killough, Co. Wicklow, Ireland (/. Hopkinson). This species can hardly be considered rar^ in Britain. It is of frequent occurrence in the localities mentioned, and doubtless in most situations of a similar character throughout the country. It seems to flourish indifferently in Sphagnum-bogs,, in damp ditches where Sphagnum is found (as in the neigh- bourho
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. The British freshwater Rhizopoda and Heliozoa. Rhizopoda; Heliozoa; Freshwater animals. PONTIGULASIA COMPRESSA. 63 also near Criccietli and in the Sychnant Pass, North Wales. South Devon, 1864 (H. J. Garter). Loch Ness (D. J. Scourfielcl). Killough, Co. Wicklow, Ireland (/. Hopkinson). This species can hardly be considered rar^ in Britain. It is of frequent occurrence in the localities mentioned, and doubtless in most situations of a similar character throughout the country. It seems to flourish indifferently in Sphagnum-bogs, , in damp ditches where Sphagnum is found (as in the neigh- bourhood of Criccietli), and in the deep waters of. Fig. 72.—Lateral views (narrow and broad) of Pontigulasia compressa. After Carter, loc. cit. x about 280. //. " Dark, collar-like mark at the base of the neck of the test" (Carter). lakes. It is recorded by D. J. Scourfield from Loch Ness, Scotland, at depths of 272 and 680 feet; and Penard finds it in Lake Leman, Greneva, at 20-40 metres depth. Examples taken at Dunham, Cheshire, in 1903, were blackish opaque, and so thickly incrusted with sand-grains as almost to obscure the constriction and render identification difficult. Individuals were very active, and might have been mistaken for coarse Dlffiugife but for the unequally compressed test. The species was first observed by Carter at Budleigh-Salterton, in " heath-bog water, " among. 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 work.. Cash, James, 1839-1909; Hopkinson, John, 1844-1919. joint author; Wailes, George Herbert, 1862-. London, Printed for the Ray Scociety