DISTRIBUTION AND GENERAL NOTES ON THE SPECIES ^67 



, ;^ r»„r nrpfl there were only 14^ measured individuals (of 



"" Iirer r sul The w d di persion. leading ,o large values for c. renders .he difference between 

 g,ve abetter resull he WP ^^^ ,^^ ^^^^^ility of migrat.on was estab, shed, 



means of some 2 5 ^■''"If "" J ^*^„,di ,„ reason could be undertaken without fear of waste 

 ^ff:": rr: sTetttmejrLSlish b^eyond al, reasonable doubt the fact of migratron on to 

 the shelf in summer and over the edge into deep water m wmter. 



II I > 



A. HAULS OF LESS THAN ZOOM MEAN DEPTH 



B. HAULS OF MORE THAN 200 M. MEAN DEPTH 



DISC WIDTHS IN CMS 



Fie X. Size-frequency distnbution (percentage at each en. of disk-width) of Raja brachyurops 



Fig. H shows that whether we consider total abundance of ^^^^^^ ^^^"t.^ 

 depth categories, or frequency of occurrence, the l^'^^^^:^ i:i'J':i''^,^:%,,,.^ appears to 

 more abundant on the shelf in summer and -'^T'^-T'^^nXt^i conformity with our thesis ; 



