Fishes of the Western Nort/i Atlantic 

 A. 



179 



Figure 37. Raja erinacea. A Juvenile male, 180 mm long, from offNew Jersey, Lat. 39°! i' N, Long. 73°4o' W, 

 23 fathoms (Harv. Mus. Comp. Zool., No. 34399), showing dermal armature. B Lower surface of anterior 

 part of head of female, 460 mm long, from Mystic, Connecticut (Harv. Mus. Comp. Zool., No. 1270). C Pos- 

 terior margin of nasal curtain of same, about 4.1 X. D Outer posterior margin of nostril of same, about 4.1 X. 

 E Upper teeth near middle of jaw of female, 445 mm long, from off Woods Hole, Massachusetts (Harv. Mus. 

 Comp. Zool., No. 36228), about loX. /" Upper teeth near middle of jaw of mature male, 440 mm long, from 

 off Woods Hole, Massachusetts (Harv. Mus. Comp. Zool., No. 36230), about lOX- 



to 1st dorsal 41.5, 39-5; to tip of tail 55.7, 54-6; from rear end of 2nd 

 dorsal base to tip of caudal 1.8, 2.2. 

 Interspace between: ist and 2nd dorsals 0.0, 0.0. 



Disc about 1.2 times as broad as long, extremely obtuse in front, the maximum 

 anterior angle in front of spiracles about 1 10—130°; anterior margins weakly concave 

 for a short distance behind tip of snout, thence evenly and weakly convex rearward 

 to outer corners of disc in newly hatched specimen ; weakly concave opposite spiracles 

 in medium-sized specimen and adult females, but much more deeply so In adult males ; 

 outer and posterior corners broadly rounded, posterior margins evenly and moderately 



