256 Memoir Sears Foundation Jhr Marine Research 



A 



Figure 55. Raja rad'iata. A Female, 800 mm long, from Massachusetts Bay (Harv. Mus. Comp. Zool., No. 1 1 39). 

 B Pelvics of same. C Nostril of female, 576 mm long, from Nahant, Massachusetts (Harv. Mus. Comp. Zool., 

 No. 254), about 2.3 X. Ti Outer posterior margin of right-hand nostril (above) and of left-hand nostril (below) 

 of male 378 mm long, from Emerald Bank, Nova Scotia, 55 fathoms (Harv. Mus. Comp. Zool., No. 33920), 

 to show variation, about 2.3 x. E Juvenile female, 127 mm long (Harv. Mus. Comp. Zool., No. 34755). 



Disc about 1.3— 1.4 times as broad as long; maximum anterior angle in front of 

 spiracles about 110—140°, small specimens averaging more obtuse than large; an- 



