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Published by means of the yank Geophysical Union as a part of the Antarctic learn Series.
Species within the genera Hyarachna, Echinozone, Pseudarachna, and Aspidarachna, all within the relations Hyarachnidae, are reviewed and significantly mentioned. A key to genera is gifted besides a desk of the species in each one genus from antarctic waters. The genus Echinozone is redefined on new specimens from Anvers Island. A precis of every species in Echinozone is incorporated, and the genus is redefined. Pseudarachna is in brief mentioned, and a moment species is additional to the genus. within the kinfolk Janiridae, Notasellus and Austrofilius are introduced out of synonymy at the foundation of specimens from Anvers Island, and the species of Iathrippa and Neojaera are mentioned with a serious evaluate of every species. The genera Nostasellus and Austrofilius are redefined. Ectias is redefined on specimens of the kind species from Anvers Island, and a species from South Africa is additional to the genus. Maps of the distribution of a number of the species are integrated.
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Additional resources for Biology of the Antarctic Seas VI
Zool. Meded. Leiden, 4: 103-142. 1941 Die Isopoden der Siboga-Expedition. 4. Isopoda Genuina. 3. Gnathiidea, Anthuridea, Valvifera, Asellota, Phreatocoidea. In Siboga Exped. Monogr. 32: 2 3 5 - 3 0 8 . Brill, Leiden, Netherlands. Nordenstam, A. 1930 Tanaidacea and marine Isopoda from Juan Fer nandez. In C. ), The natural history of Juan Fernandez and Easter Island. 3: 525-552. Almquist and Wiksell, Uppsala AB, Sweden. 1933 M a r i n e I s o p o d a of the f a m i l i e s S e r o l i d a e , Idotheidea, Pseudidotheidae, Arcturidae, Parasellidae, and Stenetriidae mainly from the South Atlantic.
Illgi, p. 51 Leg 3 with second spine of endopod 3 as long as or extending beyond conical projection 7 7(6). Labrum with conspicuous sclerotized tooth extending from posteroventral lobe (see Figure 14j) 10 14(13). 15(5). 16(15). 17(15). 18(17). 19(18). 20(17). 3 Subsample Analyzed 1/4 1/2 1/2 1/16 1/16 Labrum without conspicuous sclerotized tooth extend ing from posteroventral lobe (see Figure 13n) . . 8 Leg 5 not delimited from thoracic segment O. compacta, p. 57 Leg 5 a free segment 9 Segment of leg 5 with round expanded pleural plate .
Nordenstam 119331 defined the genus on Jaera antarctica Pfeffer, 1887 (type species), from South Georgia. Nordenstam redescribed J. antarctica and stated that it was closely related to Jaera serrata Barnard, 1914b. At the suggestion of Menzies Copyright American Geophysical Union Antarctic Research Series 24 Biology of the Antarctic Seas VI Vol. 26 BIOLOGY OF THE ANTARCTIC SEAS VI [1962a, p. 751, Wolff [19621 reduced Austrofilius Hodgson, 1910, with three species to a junior syn onym of Neojaera Nordenstam.