128 DISCOVERY REPORTS 



(d) South Georgia to South Orkney, March 193 1 (Sts. 633-638). 



St. 633, the first vertical station on this Hne, was situated to the eastward of the Burdwood Bank, 

 and with the succeeding one was made in sub-Antarctic water. At St. 635, the first station south of 

 the Antarctic convergence, twenty-eight larvae representing stages from Calyptopis 2 to Furcilia 3 

 were found, with Calyptopis 2 and 3 in greatest number. At St. 636 there were sixty-four larvae from 

 Metanauplius to Furcilia i, with Calyptopis i predominating. The Metanauplii were all in the 750- 

 500 m. net, whilst the remaining stages were distributed between 100 and 750 m. An egg, Meta- 

 nauplii and Calyptopis i were found at St. 637, the egg at 250-100 m., the Metanauplii at 1000- 

 500 m. and the Calyptopis between 100 and 1000 m. In all 129 larvae were taken, with Calyptopis i 

 in greatest abundance. 



At St. 638 the number of larvae was smaller, fourteen being taken. This station was made midway 

 between the South Orkneys and Elephant Island, and only Metanauplii and Calyptopis i were 

 taken. The Metanauplii were eight in number, and with the exception of one in the 250-100 m. net 

 were in the two lowest nets. The Calyptopis were found between 250 and 750 m. 



The last station (St. 639) on this line is better considered with the Bransfield Strait Stations, as it 

 is situated midway between the South Orkneys and Joinville Island. 



(e) South Sandwich Islands to the Burdwood Bank, March-April 1930 (Sts. 372-375 

 and WS 527-531). 



This line of stations traversed the Scotia Arc in a diagonal course from east to west, crossing the 

 Antarctic convergence between Sts. WS 529 and WS 530. The Discovery II stations were made 

 between March 18 and 21, and those of the William Scoresby between March 30 and April 5. 



At the first station (372) Furcilia 5 was in greatest abundance, with Furcilia 2, 3, 4 and 6 present: 

 there were forty-one larvae in all. 



Furcilia 5 was again predominant at St. 373, there being twenty-seven of this stage out of a total of 

 thirty-seven larvae. Furcilia 2, 3, 4 and 6 were represented. 



At St. 374 Furcilia 4 was the predominant stage with twenty-three out of a total of sixty-one larvae 

 in which Furcilia 2-6 were present. 



Furcilia 5 was once again the principal stage represented in the last Discovery II station: Furcilia 

 2, 3, 4 and 6 were also present. 



No less than 756 larvae, distributed between the surface and 500 m., were obtained at St. WS 527. 

 The larvae have been described in another section of this paper, in which attention was drawn to the 

 great variety of forms encountered. At this station, for the first time on this line, Calyptopis were 

 present. Furcilia 2 was the principal stage, and in addition Furcilia i, 3, 4, 5 and 6 were represented. 

 No larvae were recorded from St. WS 528. At St. WS 529 loi larvae were taken with Furcilia 3 

 predominating and Furcilia 2, 4, 5 and 6 present. 



Sts. WS 530 and WS 531 were in warm water and no E. superba were recorded. 



(/) South Georgia to the South Shetlands, April 1928 (Sts. WS 196-202). 



St. WS 196 was made in shallow water to the south-west of South Georgia and no larvae were 

 taken. 



At St. WS 197 Calyptopis and Furcilia i were taken in the upper nets and nothing but the 

 Metanauplius in the lowest net. Down to 750 m. Calyptopis i was the principal stage and below that 

 only the Metanauplius was obtained. There were 209 larvae altogether. 



Very few larvae were obtained at St. WS 198, the three Calyptopis stages and Furcilia i being 

 represented with the latter predominating in a total of nine. 



There were sixty-two larvae at St. WS 199, of which Furcilia i was the most prominent; in addi- 

 tion Calyptopis 3 and Furcilia 2 and 3 were present. 



At St. WS 200 there were 154 larvae, with Furcilia i again the principal stage and Calyptopis 3 

 and Furcilia 2 and 3 also present. 



