. aX • Parathemisto gaudichaudii d Vibilia antarctica o Cyllopus magellanicus o Cyllopus lucasii a Primno macropa Fig. 2. Chart showing the stations around South Georgia at which the five commonest pelagic Amphipods were captured. (Cf. Hardy, Geogr. Journ., lxxii, Sept., 1928, figs. 4, 5.) with the distribution of Eiiphausia superba (cf. Hardy, loc. cit. Figs. 4 and 5) and is evidently due to similar ecological factors. With the exception of two captures of Parathemisto gaudichandii by members of the Marine Station, not a single pelagic Amphipod was captured on the south-west side of South Geo
. aX • Parathemisto gaudichaudii d Vibilia antarctica o Cyllopus magellanicus o Cyllopus lucasii a Primno macropa Fig. 2. Chart showing the stations around South Georgia at which the five commonest pelagic Amphipods were captured. (Cf. Hardy, Geogr. Journ., lxxii, Sept., 1928, figs. 4, 5.) with the distribution of Eiiphausia superba (cf. Hardy, loc. cit. Figs. 4 and 5) and is evidently due to similar ecological factors. With the exception of two captures of Parathemisto gaudichandii by members of the Marine Station, not a single pelagic Amphipod was captured on the south-west side of South Georgia; whereas on the north-east side several species were found, some of them in great abundance (cf. chart, Fig. 2). It is true that the two vessels of the expedition did more collecting on the north-east side (cf. Discovery Reports, 1, Station list, pi. ii), but the 'William Scoresby' ran a line of stations (WS 40-52 and 63) on the south-west side with entirely negative results, so far as Amphipods are concerned. The conclusion seems warranted that the causes which Hardy {loc. cit) suggested are operative determining the distribution of Eiiphausia, are operative also in the case of the pelagic Amphipods. The same contrast in the relative abundance of Amphipods on the two sides of South Georgia is found also in the bottom fauna, though in a much less noticeable degree.
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