262 



DISCOVERY REPORTS 



almost exclusively at or over the shelf edge (Fig. 18). Fig. 9, which shows the spatial distribution, 

 also brings this point out very clearly. R. doello-juradoi is the most numerous of a small group of rays 

 which we found only in deep water, especially in the Falkland trough. The other three species were 

 all new to science. R. doello-juradoi was taken only in ' Trawl + accessory nets ', never in ' Other gear ' : 



Of the sixty-eight specimens thirty-eight were males and thirty females; sex ratio 55-9% SS- 



Fig. 9. Distribution of Raja doello-juradoi and the other deep-water rays. First survey: triangles; second survey: squares; 

 third survey: circles; negative observations left blank. Numbers refer only to R. doello-juradoi. g = R. griseocauda; 

 s = R. scaphiops ; a = R. albomaculata ; positive records only. 



Raja macloviana Norman. The general spatial distribution of this species (Fig. 10) is very similar 

 to that of R. doello-juradoi, but a consideration of its distribution with depth shows that a higher 

 proportion of R. macloviana was taken just on the shelf, instead of just ' over the edge ' ; hence the 



