Fis/ies of the Western North Atlantic 



285 



Figure 6z. X-ray photographs, slightly retouched, to show rostral cartilage and foward extension of pectoral 

 radials in Breviraja: Upper left, B atripinna ; upper right, B.co/esi; middle left, B.cuiensis; middle right, 

 B.flutonia; lower left, B.sfinosa; lower right, B. sinus-mexicanus. 



