. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. 3IO DISCOVERY REPORTS accurately gauged without weight or volume records and altogether more extensive data, but a system of arbitrary' weighting (kept well on the ' safe side') permits a diagrammatic presentation of seasonal changes in the major (lumped) categories, that gives a useful general picture. It may be regarded as a cautious understatement of the predominance of fishes and cephalopods in the diet, and of the obviously great importance of Chipea, especially in winter. The 'weighting' e
. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. 3IO DISCOVERY REPORTS accurately gauged without weight or volume records and altogether more extensive data, but a system of arbitrary' weighting (kept well on the ' safe side') permits a diagrammatic presentation of seasonal changes in the major (lumped) categories, that gives a useful general picture. It may be regarded as a cautious understatement of the predominance of fishes and cephalopods in the diet, and of the obviously great importance of Chipea, especially in winter. The 'weighting' employed, after due con- sideration of known weights of most of the food organisms was: regarding Crustacea and benthos as unity, cephalopod records were multiplied by four and fish records by five. The results are shown in Fig. 26. Doubtless this picture would be altered by more detailed results, especially if the size of the fish could be taken into account, but such work will only be possible when a naturalist can devote his whole time to the one problem. A B C. Fig. 26. Diagrams showing crude relative proportions (arbitrarily weighted) of the main food categories of Merlucdus huhbsi at different seasons. Weighting: fish x 5, squids x 4, Crustacea x i, and echinoderms, etc., x i. Echinoderms, etc., which are rarely eaten are left white in the diagrams. A, third survey, summer. B, first survey, autumn. C, second survey, winter. PARASITES Like most other sea fishes M. hubbsi were observed to be very commonly infested with nematode, cestode and trematode worms. On the first survey these three classes of parasites were observed to be present in (roughly) the order of frequency in which they are named above, and it was noted that they seemed particularly abundant in the larger (older) fish. Almost all the specimens examined had nematodes in some part of the digestive tract or in the body cavity. Copepodan parasites were evidently less frequent but not uncommon. Chondracanthidae we
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