. The British freshwater Rhizopoda and Heliozoa. Rhizopoda; Heliozoa; Freshwater animals. ASSULINA SEMINULUM. 58 {West, Brown); Perthshire {Gash, Brown); Argyllshire (Broivn); Mid-Lothian {Gash); Dumfriesshire; Wig- townshire {Brown). Ireland.—The Islands off Clew Bay, and mainland, Mayo; Gal way; Wicklow {Archer). The arrangement of the scales on the fundus of the test is of a more or less radial character (fig. 131), giving place gradually to a diagonal arrangement towards the middle and anterior end of the test; superficially the scales have the appearance of over- lapping from the fundus d
. The British freshwater Rhizopoda and Heliozoa. Rhizopoda; Heliozoa; Freshwater animals. ASSULINA SEMINULUM. 58 {West, Brown); Perthshire {Gash, Brown); Argyllshire (Broivn); Mid-Lothian {Gash); Dumfriesshire; Wig- townshire {Brown). Ireland.—The Islands off Clew Bay, and mainland, Mayo; Gal way; Wicklow {Archer). The arrangement of the scales on the fundus of the test is of a more or less radial character (fig. 131), giving place gradually to a diagonal arrangement towards the middle and anterior end of the test; superficially the scales have the appearance of over- lapping from the fundus downwards, but an examina- tion of the test in section shows that the usual arrangement of the scales holds good, i. e. the anterior. Fig. 131.—Portion of test of A^sulina semimdum. x 1200. Gormire, N. Yorks. ones overlap those nearer the apex; the reverse appearance is probably due to the unusual thickness of the chitinous material which cements them together; owing either to this thickness, or perhaps to an admix- ture of silicious matter with the chitin, the tests are not disintegrated by strong sulphuric acid. The pseudopodia are seldom observed, and when the tests are of a brown colour little can be seen, of the contents, but the nucleus can usually be located as a light circular patch on which the outlines of the scales are distinguishable, Near Lough Nahanagan, Wicklow, 2000 feet, an unusual form occurs; the test is colourless, in broad view narrowly oviform, moderately compressed, of the following dimensions: length about 100/a; breadth 60-65 ja; thickness about two-thirds of the 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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