FIRST RECORDS OF THE GENUS CERATONOTUS SARS,G.O., 1909 (COPEPODA, ANCORABOLIDAE) FROM THE SOUTHERN-HEMISPHERE, WITH THE DESCRIPTION OF 2 NEW SPECIES

Two new ancorabolid species, Ceratonotus magellanicus sp. n. and Cerat onotus antarcticus sp. n., are described from the Straits of Magellan (Chile) and from Halley Bay (Weddell Sea, Antarctica), respectively. T his is the first record of the genus from the Southern Hemisphere exte nding its range to the extreme south of the globe. Both new species ar e clearly distinct, each characterized by several unique features. The y share a few characters which are absent in the two known species fro m the Northern Hemisphere. It is, however, not clear yet whether this indicates that they represent a subgroup distinct from the northern sp ecies within the genus.