Antarctic Cirripedia

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Published via the yankee Geophysical Union as a part of the Antarctic examine Series.

This is the 1st try to assemble what's identified of the antarctic cirriped fauna in a single accomplished treatise. It covers the systematics of the barnacles of subantarctic and antarctic areas and their distribution, either contemporary and paleontological. A moment half already in education will file on planktonic larvae.

Antarctic Cirripedia, the second one monographic contribution within the Antarctic learn sequence, regularly follows the trend set through Kott's Antarctic Ascidiacea (1969). The learn, so far as attainable, covers all documents made by way of earlier expeditions to Antarctic waters and culminates during this quantity with the 1962-1965 cruises of USNS Eltanin. The checklist of the relevant vessels that have introduced again cirriped fabrics from antarctic areas is a remarkable one: Aurora, Belgica, Challenger, Discovery, Endeavour, Ob', Pourquoi-Pas?, Soya, Terra Nova, Umitaka-Maru and William Scoresby. but the variety of benthic samplings of cirripeds made by way of Eltanin less than the U.S. Antarctic learn software from south of the Antarctic Convergence exceeds the full of these back by means of all previous expeditions.

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12G, H ) . Maxilla I highly spinose; cutting edge steplike; spines divided into 3 clusters; apical cluster uith 2 large stout spines anti 5 short, thin spines; moderate notch separates apical cluster from medial cluster; medial cluster contains 9-11 long, thin spines. 1VIaxilla I1 triangular in outline; marginal setae divided into distinct clusters; setae of superior proximal cluster longer than those in other 2 clusters. Rami of cirrus I grossly unequal (fig. 12K) ; pos:; length of anterior ramus; terior ramus about 3 intermediate articles not significantly protuberant; inner faces of both rami heavily clothed with randomly arrayed, long setae.

157-158). Genus Cretiscalpellum Withers, 1922 Diagnosis: Capitular plates 17, including 4 pairs of large, overlapping and little-modified lower latera; subcarina much larger than rostrum; all umbones apical. Type-species: Pollicipes unguis J. de C. Sowerby, 1836, p. 335, by subsequent designation. Cretiscalpellum aptiensis antarcticum Taylor, 1965 Plate VI F-H Cretiscalpellum aptiensis var. antarcticum Taylor, 1965, p. 37, figs. 1, 2 a, b. Material: East coast of Alexander Island, Antarctic Peninsula (approx.

Of cirrus V I ; hl', pc%tlic:el of c,irrus VI showing relationshil)s of cirrus, cautlal apl~rntlagc ant1 penis; N, cnlargcd vicw of c ~ ~ u d apperrdagc. al Eltanin, Sta. 1429. ably S. hypocrites, have been retained in Smilzum, which still consists of an assrmhlage of only distantly related species. The removal arid subsequent assignment of species of Sn~rlzurn to Calantica has only served to weaken the tiefirrition of Culantica, and to further complicate the drlimiting morphological features of these two groups of primitive lepatlomorphans.

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