A zoological pocket-book, or, synopsis of animal classification ; comprising definitions of the phyla, classes, and orders, with explanatory remarks and tables / by Emil Selenka ; translated from the third German edition by J. R. Ainsworth Davis.

  • Selenka, Emil, 1842-1902.
Date:
1890
Catalogue details

Licence: Public Domain Mark

Credit: A zoological pocket-book, or, synopsis of animal classification ; comprising definitions of the phyla, classes, and orders, with explanatory remarks and tables / by Emil Selenka ; translated from the third German edition by J. R. Ainsworth Davis. Source: Wellcome Collection.

Provider: This material has been provided by UCL Library Services. The original may be consulted at UCL (University College London)

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    Order 6. Heliozoa. Globular Rhizopods, with fine stiff radiating pseudopodia. Protoplasm containing one or more nuclei and contractile vacuoles, and very numerous non-contractile vacuoles. A siliceous skeleton sometimes present. Qyst- and spore-formation may take place. Actinosphserium and Actinophrys sol, sun animalcule, without skeleton. Raphidiophrys, with loose tangential spicules. Acantho- cystis, with radial spicules. Clathrulina, stalked, and with perforated spherical shell. Lead on to Order 7. Eadiqlaria. Marine Rhizopods of globular or conical shape, with differentiated protoplasmic body. Radiating filamentous pseudo- podia, central nucleus-containing capsule, and (generally) a radial or tangential skeleton of silica or acanthin. No contractile vacuole. Re- production by fission or swarm-spores. Parasitic (1) or symbiotic (?) ye] low corpuscles very generally present. Actinomma. Thalassicolla, no skeleton, Ox)llozoum, colonial and without skeleton. Acantho- metra, Eucyrtidium,