. Fig. 2. Muraenolepis microps. x |. The only other species of Muraenolepis from the Antarctic Zone is M. microcephaliis, Norman, known only from the unique holotype, 125 mm. in total length, from 63° 51' S., 54° 16' E (2000 metres of wire), collected by the Antarctic Research Ex- pedition. This form appears to be most nearly related to M. orangiensis, Vaillant, from the Patagonian region. I have given a key to the four known species of Muraenolepis elsewhere.^ REVISION OF THE ANTARCTIC NOTOTHENIIFORMES Regan's revision published in 1913,'^ together with his subsequent report on the r
. Fig. 2. Muraenolepis microps. x |. The only other species of Muraenolepis from the Antarctic Zone is M. microcephaliis, Norman, known only from the unique holotype, 125 mm. in total length, from 63° 51' S., 54° 16' E (2000 metres of wire), collected by the Antarctic Research Ex- pedition. This form appears to be most nearly related to M. orangiensis, Vaillant, from the Patagonian region. I have given a key to the four known species of Muraenolepis elsewhere.^ REVISION OF THE ANTARCTIC NOTOTHENIIFORMES Regan's revision published in 1913,'^ together with his subsequent report on the rich material collected by the 'Terra Nova',^ has placed the taxonomy of this group of fishes on a sound basis. In more recent years, however, the Australasian Antarctic Expedition of 1911-1914, and the British, Australian, New Zealand Antarctic Research Expedition of 1929-1931, together with the important collections of the Discovery Committee, have brought to light a number of additional forms, and have added con- siderably to our knowledge of the fish fauna of the Antarctic Zone.* The problems raised by the study of this material have led me to undertake a new revision of these fishes, which, although it amplifies that of Regan, only modifies his conclusions in certain comparatively unimportant details. Division NOTOTHENIIFORMES Percoid fishes, normally without pungent fin-spines, with the spinous dorsal, when developed, shorter than the long soft dorsal and anal, the principal caudal rays reduced in number (usually 14), the pectorals typically broad-based, and the pelvics jugular, 1 Norman, 1937. Rep. Antarct. Res. Exped., Ser. B, I, p. 69. ^ Trans. R. Soc. Edinburgh, XLix, pp. 249-289. ^ 1914, Rep. Brit. Antarct. (' Terra Nova') Exped. 1910, Zool. I (i), pp. 1-54. * This Zone includes the Glacial District and the Kerguelen District, see Regan, 1914, , pp. 33-36.
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