. 41 103 33 51 58 75 80 47 40 32 no ISO 50 lOO 45 lOO 362 100 lOO lOO 100 62 192 56 100 lOO 186 100 52 59 59 50 lOO 100 lOO 405 90 ADOL 6 FURCILIA 16 14 12 10 N2 EXAM - - INED Fig. 116. Developmental condition of the massed surface larvae and small whale food in the 11-20 mm. range in winter. The distribution and relative abundance of the massed surface larvae in winter (July-September) is shown in Fig. 115. They are now, as Fig. 116 shows, exclusively late Furcilias, predomin- antly the Sixth, and becoming increasingly adolescent. As in autumn they continue to fill the Weddell drift and the S
. 41 103 33 51 58 75 80 47 40 32 no ISO 50 lOO 45 lOO 362 100 lOO lOO 100 62 192 56 100 lOO 186 100 52 59 59 50 lOO 100 lOO 405 90 ADOL 6 FURCILIA 16 14 12 10 N2 EXAM - - INED Fig. 116. Developmental condition of the massed surface larvae and small whale food in the 11-20 mm. range in winter. The distribution and relative abundance of the massed surface larvae in winter (July-September) is shown in Fig. 115. They are now, as Fig. 116 shows, exclusively late Furcilias, predomin- antly the Sixth, and becoming increasingly adolescent. As in autumn they continue to fill the Weddell drift and the South Georgia whaling grounds, for the most part in enormous numbers, and again, judging from our negative August line of observations between 30° and 60° E, there as yet does not appear to have been any major overflow of this teeming population eastwards of 30° E. The West Wind drift is barren except as before where it is affected by cold East Wind penetrations, namely, south-east of Kerguelen, north-east of the Ross Sea near 150° W (both September records) and again (possibly) in the southern part of the Drake Passage. Such observations as we have in the Pacific sector (in the West Wind drift only) are negative except as aforementioned in such small part of it as is affected by north-easterly outflow from the Ross Sea. As to what is taking place in the East Wind drift, now completely encompassed by the winter pack, further comment is unnecessary, the probable position there having already been outlined in the commentary on the winter and spring distribution of the larvae based on the data (pp. 334-8) from the vertical nets.^ The developmental condition of the principal concentrations of the massed surface larvae in winter, based throughout on our observations in the Weddell drift and on the South Georgia whaling grounds, is shown in Fig. 116. The major features of it may be summarised thus: (i) Substantial numbers of purely larval swarms (Furcilias 4-6) persist throughout
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