154 True Fishes 



LUMPFISH, CLINGFISH, SWELLFISHES, 

 BOXFISH, PORCUPINE FISH 



I. Gill opening large: equal to half depth of body at rear 

 margin of operculum 

 Page 155, figs. A, B 



la. Head shorter than depth of body 

 Page 155, fig. A 



See Lumpfish, p. 389. 



lb. Head longer than depth of body 

 Page 155, fig. B 



See Clingfish, p. 405. 



II. Gill opening small: only a slit before pectoral fin and 

 shorter than base of pectoral fin 

 Page 155, figs. C-G 



See Swellfishes, Boxfish, Porcupine Fish, p. 156. 



