54 DISCOVERY REPORTS 



of the Continuous Plankton Recorder between South Georgia and the Falkland Islands 

 on April 20-21, from 51 52' S, 44° 29' W to 51 24' S, 48 32' W. 



Rh. rhombus, Karsten, was represented by a single specimen taken at St. 151. 



Rh. simplex, Karsten, was taken in small numbers at twelve stations, mostly to the 

 south and west of the island: 137, WS 33, WS 34, WS 35, WS 36, WS 39, WS 40, 

 WS 43, WS 44, WS 45, WS 46 and WS 51. 



Rh. shrubsolei, Cleve, was only taken at St. 161. 



Rh. stylijormis, Brightw. This species occurred at many stations. In November 1926 

 it occurred in the N 70 V nets (N 50 V nets not being used) at St. 19, 2520; St. 20, 



Fig. 24. Distribution of Rhizosolema stylijormis round South Georgia in the December-January 1926-7 



survey. For full explanation see legend of Fig. 16, 



6600 ; St. 21, 4 and St. 22, 340. Its distribution during the December-January, 1926-7 

 survey is shown in Fig. 24 and Appendix I, where it will be seen that it occurred in 

 small numbers at many stations round the island and only at two outlying stations, 

 one on each side of the island, in large numbers. 6,282,000 are recorded for St. 161 

 far to the south-west. It occurred in fair numbers between South Georgia and the 

 Falkland Islands at St. 160 and WS 67-70, see Fig. 25, and was present in small 

 numbers at Sts. WS 110-114 on the C line in late May 1927. The slender forms 



