GENERAL ACCOUNT OF THE FISH FAUNA 



253 



Table i {continued) 



* Species not taken during the surveys. 



f Species not taken in this area, but specimens obtained by the expedition elsewhere. \ Observed, but not taken. 



§ Taken by Mr MacDonagh at Puerto Madryn. || Species taken only in 'Accessory nets' when trawled. 



the latter may prove to be a young example of Austrolycus depressiceps Regan (Norman, 1937, p. 106). 

 Specimens of three species, recorded from the shelf but not taken there by us, were obtained on other 

 occasions among the channels to the westward. 



Of our seventy-nine 'shelf species, sixty-one were obtained in the ' Trawl + accessory nets', thirty- 

 five in ' Other gear' (including ten that were not trawled), and twenty-three by shore parties (including 

 seven not taken by other means), the total being made up by the basking shark seen by Dr Hamihon. 

 Thus we see that of the ninety odd species recorded from the region, two-thirds were obtained by 

 trawling. The remainder are mainly littoral fishes; for example, eight of the notothenias and two 

 zoarcids have never been taken in water deeper than 46 m. (25 fm.). The difficulties of obtaining 

 littoral fishes in this area are great : the tidal range is small and the surf often heavy, while the great 



