110 True Fishes 



FILEFISHES 



I. Small spine on ventral flap; gill slits nearly vertical 

 Page 111, figs. A, B 



la. Ventral flap well developed; extends beyond the 

 ventral spine 

 Page 111, fig. A 



See Fringed Filefish, p. 407. 



lb. Ventral flap small; does not reach beyond the ven- 

 tral spine 

 Page 111, fig. B 



See Common Filefish, p. 406. 



II. No spine on ventral flap; gill slits oblique 

 Page 111, figs. C, D 



Ila. Length of base of dorsal fin greater than distance 

 from origin of dorsal spine to origin of dorsal fin 

 Page 111, fig. C 



See Unicorn Filefish, p. 408. 



lib. Length of base of dorsal fin about equal to dis- 

 tance from origin of dorsal spine to origin of 

 dorsal fin 

 Page 111, fig. D 



See Orange Filefish, p. 407. 



