231 



ZOOGEOGRAPHY 



no previous records of T. septentrionalis from the Sub-Antarctic, other than those reported by Monro 

 (1936) from 'Discovery' Sts. 450 and 449, and he also recorded it in abundance from the Sub- 

 Tropical and Tropical Zones. Stop-Bowitz (1951) reported it off the coast of Brazil. 



Both T. planktonis and T. septentrionalis were probably present in the ' Meteor ' collections from 

 the South Atlantic, reported by Friedrich (1950 c) as Tomopteridae. 



2 5°W 



iS 4,5«* S S 3 

 SS 13.15. 

 SS 14' 



• SS 6.7 

 "SS 9,10.1 1,12 



SS I9-SS20 

 SSI7~ssT6- 



SS I 



SS22 : S S23 

 •SS2I 



SS24. 



•SS28 



SS30* 



SS29- 



-60°S 



SS35.SS34 SS33 

 SS 36. «ss 32 SS 55. 

 .SS 39 I 

 •SS40 



SOUTH 

 SANDWICH GROUP 



•SS44 



SS53 



SS 56.. ss 58 



Text-fig. 33. Occurrence of Tomopteris septentrionalis round the South Sandwich Islands. 



Typhloscolex mulleri 

 (Text-figs. 34, 35, 36; Tables 16 and 17, Appendices I and II) 

 The cosmopolitan T. mulleri was collected in all explored water masses of the South Atlantic except 

 in the Antarctic Zone where it appears mainly in the Warm Deep Water; it occurs in Antarctic 

 Surface Water only south of the northern limit of Weddell Drift. This species is small, rarely 

 measuring more than 7 mm. in length and was caught mainly by the N 70 nets. 



In the South Georgia Surveys, T. mulleri was caught by eleven nets in February-March 1928, 

 nine times between 1000 and 250 m. and once in each of the 250-100 and 100-50 m. nets 1 (Text- 

 fig. 34). In January-February 1930, no catches were made above 100 m., but six were made by nets 



1 Disregarding the catches made at St. WS 190 where the nets from 1000 and 750 m. did not close. 



