TINTINNIDAE AND MEDUSAE 103 



Tintinnidae 



Our knowledge of the distribution of the Tintinnidae is obtained from the N 50 V 

 nets hauled from 100 m. to the surface. Little information is available from the stations 

 to the east of South Georgia taken in March 1926, when the N 50 V net was used on 

 only three occasions, yielding none at Sts. 23 and 31, but 3300 at St. 41 C. 



The distribution round South Georgia during the December- January survey, 1926-7, 

 is shown in Fig. 48, where it will be seen that they occurred on the western side of the 

 island in somewhat larger numbers than on the eastern side. A large number, 192,000, 

 was taken at St. 1 6 1 far to the south-west of the island ; on the line to the Falkland Islands 

 taken at the same time, in February 1927, the number decreased until none were met 

 with at Sts. WS 69 and WS 70 across the line of Antarctic Convergence ; this is shown in 

 Fig. 48. A complete statement of the numbers taken is shown in Appendix II, where it 

 will be seen that fair numbers were taken in May 1927, to the east of South Georgia 

 at Sts. WS 110-114. 



COELENTERATA 



The distribution of the medusae and Siphonophora in general is tabulated in 

 Appendix II. Mr E. T. Browne has kindly identified some of the more important 

 medusae and Captain A. K. Totton likewise the Siphonophora. 



The distribution of these forms is as follows : 



Anthomedusae 

 Catablema zoeldoni, E. T. Browne. 



St. 133 ... 2 at 100 m. St. WS 22 ... 1 at 185 m. 



St. 138 ... 1 at 77 mm. St. WS 29 ... 1 at 131 m. 



Five specimens of this medusa were taken by the Gauss 1 Expedition at their winter 

 station, approx. 66° S, 90 E. 



Sibogito borchgrevinki, E. T. Browne. 

 St. WS 20 ... 3 at 90 m. St. WS 42 ... 1 at 0-5 m. 



St. WS 37 ... 1 at 250-100 m. 



This species was taken by both the Southern Cross 2 and Gauss 1 Expeditions. 



Leptomedusae 



Cosmetirella sp. 

 St. 41 B ... 1 at 265-150 m. 



C. simplex was the commonest Leptomedusan taken by the Gauss 1 and was also taken 

 by the Southern Cross' 2 and National Antarctic (Discovery) 3 Expeditions. 



Narcomedusae 

 Pegantlia sp. 

 St. WS 29 ... 1 at 80 m. 



1 Vanhoffen (1912). 2 Smith (1902). 3 Browne (1910). 



14-2 



