22 



Part first. 



Fig. 59. Scyllium catulus, 

 I /Q nat. size. p. 89. 



Fig. 60. 



J 



Mustelus vulgaris, 

 at. size. p. 89. 



Fig. 6 1 . Conger vulgaris, 

 Vs nat. size. p. 94. 



