138 DISCOVERY REPORTS 



The observations are derived from the records of the i-m. net hauls and not from the 

 70-cm. vertical net hauls. In a previous section attention was drawn to the selectivity 

 of these nets, and it was pointed out that the larger nets give a better indication of the 

 presence of larger larvae. At the time of year when the circumpolar cruise was made, 

 larger, rather than smaller, larvae were to be found, so that the records obtained form a 

 useful link both in time and developmental stages between those of the 70-cm. nets, 

 concerned chiefly with larvae of the first year class, and those of the i-m. nets examined 

 with special reference to larvae of the second year class. • 



The following is a list of the sections into which the stations of the cruise have been 

 subdivided (see Fig. 60): 



((?) Cape Town-Enderby Land-Fremantle, April 1932. 



(b) Fremantle-Adelie Land-Melbourne, May 1932. 



(c) Melbourne-ice-edge-New Zealand, June 1932. 



(d) New Zealand-ice-edge-subtropical convergence, September 1932. 



(e) Bellingshausen Sea, October-November 1932. 



(/) South Georgia-ice-edge-Cape Town, March 1933. 



In the section (e) incidental reference is made to catches of young krill from the 

 vicinity of South Georgia and from the Weddell Sea, with which the krill from the 

 Bellingshausen Sea is compared. 



(a) Cape Town-Enderby Land-Fremantle, April 1932 (Sts. 843-876). 



The first cruise began at Simonstown on April 8, and at St. S52, four stations north from the 

 turning point at the ice-edge, krill was taken. Larvae were found in increasing amount until the 

 ice-edge was reached. 



One Furcilia 2 was found at St. 852. At St. 853 six larvae representing Calyptopis 3, Furcilia i and 

 2 were taken, with the Calyptopis predominating. Nineteen larvae were taken at St. 854, with Caly- 

 ptopis 3 predominating and Calyptopis 2 and Furcilia i present. At St. 855 close to Enderby Land, 

 there were 575 larvae in the surface net with Calyptopis 3 predominating and Calyptopis 2 and 

 Furcilia i, 2 and 3 represented. In the lower net there were four Calyptopis 2 and six Calyptopis 3. 



No larvae were taken again until St. 861, where deep and shallow nets were towed. In the shallow 

 net were 131 larvae, and in the deep 86. No Calyptopis were taken but Furcilia 1-5 were present 

 with Furcilia 2 predominating. At St. 862 most of the larvae (39) were again concentrated in the 

 upper net; in the lower net there were five. Furcilia 1-6 were present with Furcilia 4 the most 

 abundant. 



John suggests that the presence of larvae at Sts. 861 and 862 was due to the stations having been 

 made where the surface layer was of cold Antarctic water deflected northwards along the west side 

 of the Kerguelen-Gaussberg ridge. 



The majority of the larvae, taken in April off Enderby Land, were Calyptopis with a rise to dom- 

 inance of Furcilia 2 and 4 at Sts. 861 and 862. 



(b) Fremantle-Adelie Land-Melbourne, May 1932 (Sts. 877-896). 



On the second visit to the pack-ice only small numbers of larvae were obtained. John states that 

 they met young pancake-ice in 63" 41^' S as darkness fell. A station (887) was made and larval krill 

 was taken. John had hoped that on the following day they would find the pancake-ice had formed a 

 narrow fringe along pack-ice near which he anticipated finding large numbers of krill larvae: but 

 during the night pancake-ice began to form around the ship, so she turned and steamed northwards 

 making St. 888, twenty-five miles from the edge of the ice. 



