72 Tail Region — True Fishes 



I. Caudal fin consists of two lobes of unequal lengths 

 Page 73, figs. A-D 



la. Upper lobe of caudal fin longer than lower lobe 

 Page 73, figs. A-C 



See Sturgeons, Sea Catfishes, Pigfish, p. 112. 



lb. Upper lobe of caudal fin shorter than lower lobe 

 Page 73, fig. D 



See Flying Fishes, p. 114. 



II. Caudal fin consists of two lobes of equal length or of 

 only one lobe 

 Page 73, fig. E 



See TAIL REGION— TRUE FISHES, p. 74. 



