Fishes of the Western North Atlantic 495 



shapes and positions of the fins, as well as in the shape of the teeth, or with Dalatias. But 

 even apart from the fin spines, its overlapping, scale-like dermal denticles differ widely 

 in appearance from the thorns with which the skin of Somniosus is beset, and its lower 

 teeth differ markedly from those of Dalatias. 



Figure 94. Ceniroscymnus coelole-pis, female, about 1,080 mm. long, from off Banquereau Bank, Nova 

 Scotia (Harv. Mus. Comp. Zool., No. 35237). A Dermal denticles, about 5 x. 5 Upper teeth from center 

 of jaw. C Upper teeth from side of jaw. D Outermost three rows of upper teeth. E Lower teeth from center 

 of jaw. F Lower teeth from side of jaw. G Outermost rows of lower teeth. B—G, about ^ x. H Front and 

 lateral views of upper teeth from side of jaw, about 6 x. 



Figure 95. Head of Ceniroscymnus coelolefis, pic- 

 tured in Fig. 94, from below. 



