342 



DISCOVERY REPORTS 



SUMMARY OF OBSERVATIONS ON PATAGONIAN NOTOTHENIIFORMESi 



The survey of our observations on the distribution and bionomics of the individual species of Pata- 

 gonian Nototheniiformes enables us to present some of the main features regarding the group as a 

 whole in more concentrated form. Table 35 gives a list of all the species known from the area up to 

 the time of the publication of Norman's report, and shows which were captured in our trawls or with 

 'Other gear', with brief notes on records of occurrence outside the area investigated. 



Table 35. List of the Patagonian Nototheniiformes, their occurrence in our material and their 



distribution outside the area surveyed 



A = taken in ' Trawl + accessory nets'; B = taken in 'Other gear' or by shore parties; C = not taken by the Expedition. 

 * See Norman (loc. cit.) for the doubtful records of this species in New Zealand. 



In their regional distribution within our area, the group as a whole is a southern one. Of the 

 deeper water species only the dominant Notothenia ramsayi, with Cottoperca gohio and Notothenia 

 elegans were recorded in the northern region ; and Cottoperca was much more plentiful in the southern 

 region, while Notothenia elegans seemed to find its optimum in the intermediate region. N. guntheri 

 appeared twice in the intermediate region, but 49° S was its northern limit among our observations, 

 which was true also of Dissostichus and Champsocephahis, characteristically southern genera. Little 

 can be said concerning the probable northern limits of the littoral species, owing to unavoidable lack 

 of observations in Argentine territorial waters. Eleginops and Bovichtus are known to range far to 



1 This supra-family grouping is convenient for purposes of this summary. It includes the families shown in the Table 

 with other exclusively Antarctic ones. Elsewhere in this report I have avoided using such groupings, as many of them 

 involve questions of classification that are still unsettled. 



