176 True Fishes 



WOLF FISH, SEA SNAILS, COMMON BIG-EYE, 

 BUTTERFLY FISHES 



I. Body elongated; total length over four times greatest 

 depth of body 

 Page 177, figs. A-C 

 la. Origin of dorsal fin on top of head 



Page 177, fig. A 



See Common Wolf Fish, p. 402. 

 lb. Origin of dorsal fin in back of head over pectoral fin 



Page 177, figs. B, C 



1. Front part of dorsal fin separated by a notch 

 from rest of fin 



Page 177, fig. B 

 See Sea Snail, p. 389. 



2. Front part of dorsal fin not separated by a notch 

 from rest of fin 



Page 177, fig. C 



See Striped Sea Snail, p. 390. 



II. Body deeper; total length less than four times greatest 

 depth of body 

 Page 177, figs. D-F 

 Ila. Tail fin concave 



Page 177, fig. D 



See Common Big-Eye, p. 370. 

 lib. Tail fin rounded 



Page 177, figs. E, F 



1. A large spot on body below rear part of dorsal 

 fin 



Page 177, fig. E 



See Four-eyed Butterfly Fish, p. 384. 



2. No large spot on body below rear part of dorsal 

 fin 



Page 177, fig. F 



See Common Butterfly Fish, p. 383. 



