140 



DISCOVERY REPORTS 



Rhincalanus gigas, Brady. This large Copepod was widely distributed throughout the 

 area. A complete record of its occurrence is shown in Appendix II. 



Whilst it is a typically Antarctic Copepod it was taken in small numbers extending 

 across the Antarctic Convergence. Farran (1929) in his report on the Terra Nova collec- 

 tions describes it " from 54 02' S southwards to the ice. . .most numerous between 6o° 

 and 70 S ". He writes further that " there is a gap of 1200 sea miles between the most 

 northerly record of this species and the most southerly record of R. nasutus". In our 

 area the distribution of the two species just overlap, a small number of R. nasutus being 

 taken at South Georgia. 



Larger catches were made with the larger nets N 100 II than with the N 70 V net, 

 but the results from the N 70 V net are also used in this section, so that its occurrence 

 may be compared with that of other Copepods dealt with in the report (see Fig. 66). 

 In the December-January South Georgia survey, 1926-7, the average number per 50 m. 

 haul with the N 70 V net in the top 250 m. of water was 22. The maximum number 

 per 50 m. haul with the N 70 V net was 640 (St. 15, March 1926). 



