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Published by way 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 relatives Hyarachnidae, are reviewed and significantly mentioned. A key to genera is gifted besides a desk of the species in every 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 extra 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 severe overview of every species. The genera Nostasellus and Austrofilius are redefined. Ectias is redefined on specimens of the sort species from Anvers Island, and a species from South Africa is extra to the genus. Maps of the distribution of a number of the species are integrated.
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Additional info for Biology of the Antarctic Seas VI
Nordenstam [19331 recorded specimens from the South Atlantic, east of Patagonia, the Falk land Islands, and Tierra del Fuego. He illustrated only the maxillipeds and pleopod 4. His description lacks essential detail. The status of the species must rest on the type specimen described by Pfeffer from South Georgia, all other specimens described perhaps are of different species, since in illustrations they have serious discrepancies when compared to Pfeffer's illustration and description. Neojaera serrata (Barnard) Jaera serrata Barnard, 1914b, p.
Second antenna three-segmented. First maxilla one-segmented. Sec ond maxilla with setose claw. Maxilliped of female four-segmented, margin of claw fringed with setules. Legs 1-4 with long slender endopods; exopods armed with serrate lancet-shaped spines. Leg 5 small, rod shaped or knob shaped. Male urosome six-segmented, the genital segment voluminous with produced lateral angles; first antenna with three short ter minal segments fused; maxilliped three-segmented. Gender feminine. 8(7). 9 (8).
His illustration shows that the lateral margin of the pleotelson is serrated. Notasellus chilensis (Menzies) Iathrippa chilensis Menzies, 1962a, p. 70, figs. 19a-19k (not I. chilensis Nierstrasz, 1918). The species is described by Menzies |1962a| as having a dentate rostral apex and no serrations on the tip of the preapical angle of male pleopod 1. The specimens were recorded from southern Chile at eight stations beginning on the shore in algae to 350 m deep. Notasellus multidens (Menzies) Iathrippa multidens Menzies, 1962a, p.
Biology of the Antarctic Seas VI