CHAETOGNATHA 



109 



South Georgia from Tristan da Cunha, and between South Georgia and the Falkland 

 Islands. The complete details of its occurrence are given in Appendix II. 



E. hamata was taken in the Antarctic by the 'Challenger', 1 National Antarctic 

 ('Discovery'), 2 'Gauss', 3 'Scotia' 4 and 'Aurora'. 5 It occurs also in Arctic waters and 

 is a mesoplanktonic form in warmer latitudes. 



Sagitta gazellae, S. maxima and S. planktonis. All three species had a general distribu- 

 tion, but none of them was abundant. Of the three, S. gazellae was most frequently 

 met with. Their occurrence is tabulated in Appendix II. Their depth distribution is 

 shown in Tables XVII, XVIII and XIX. All three have been recorded in the Antarctic 

 by the ' Gauss ', 3 ' Scotia ' 4 and ' Terra Nova ' B and S. gazellae and S. planktonis by the 

 'Aurora'. 5 



Table XVI 



The depth distribution of Eukrohnia hamata as shown by the N 70 V nets 



Table XVII 

 The depth distribution of Sagitta planktonis as shozvn by the N 70 V nets 



1 Fowler (1907). 

 4 Jameson (1914). 



2 Fowler {ibid). 

 5 Johnston (1921). 



3 Ritter-Zahony (1911). 

 6 Burfield (1930). 



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