THE ELASMOBRANCII FISHES 



31 



Fig. 34. Scale patterns of Elasmobranchs. K. Mustelus calif amicus. (H. M. Gilkey, del.) 

 B. Squaliolus. (From Smith.) C. Anchor scale. D. Stomodeal denticles. E. Flattened transi- 

 tional scales. F. Nodules from fin margin. (C-F, Heterodontus francisci. Duncan Dunning, 

 del.) 



