. The British freshwater Rhizopoda and Heliozoa. Rhizopoda; Heliozoa; Freshwater animals. a BKITISH FRESHWATER EHIZOPODA. Althougli this species is now almost universally called Diffliigia pyriformis, Ehrenberg's name has the priority and must be adopted in accordance with the rules of zoological nomenclature. "While there can moreover be no question as to the species being Ehrenberg's Difflugia oblonga, its identity with the pyriformis of Perty admits of doubt; indeed from its smooth outline, slender neck, and nearly regular mark- ings, Perty's figure may represent a Nebela. [From the de
. The British freshwater Rhizopoda and Heliozoa. Rhizopoda; Heliozoa; Freshwater animals. a BKITISH FRESHWATER EHIZOPODA. Althougli this species is now almost universally called Diffliigia pyriformis, Ehrenberg's name has the priority and must be adopted in accordance with the rules of zoological nomenclature. "While there can moreover be no question as to the species being Ehrenberg's Difflugia oblonga, its identity with the pyriformis of Perty admits of doubt; indeed from its smooth outline, slender neck, and nearly regular mark- ings, Perty's figure may represent a Nebela. [From the description, however—" Schale birnformig, man- chmal unregelmassig; Textur grob "—it seems more. Fig. 37.—Difflugia pyriformis Perty : ? = D. oblonga Elirenb. After Perty, loc. cit. x about 200. probable that it is really a Dijjiugia, for the tests of the Nebelse can scarcely be said to have a coarse texture. It was considered by Ehrenberg to be the same as his species, for he says: " Si reversa D. oblonga incrustatione detersa ex D. pyriformis oriretur quod Claparede et Lachmann nomen delendum ; ('Abth. Akad. Wiss. Berlin,' 1871, p. 256.)] Ehrenberg's name proteiformis has been adopted by some authors as covering the species now under consideration,* but, we think, without sufficient reason. * [The identity of the forms tlius named with D. ohlonga is so doubtful that the references are omitted in the synonymy.]. 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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