

PJSCES 



373 



Bones of the pharynx united Order Pharyngognathi. 



Dorsal, anal, and pelvic fins without spines Order Anacanthini. 



(Cod-fish, haddock, flat-fish, etc.) 



(Two other teleost orders of less importance, embracing some very pecu- 

 liar forms, are the Plectognathi (globe-fishes) and the Lophobranchii (sea 

 horses, Fig. 60; and pipe-fishes). 



FIG. 188. 



PIG. 1 88. Sheepshead. Greatly reduced. Photographed from life by Dr. R. W. Shufeldt. 



FIG. 189. 



FIG. 189. Young of the Snowy Grouper (Epinephelus niveatus). 

 Shufeldt: American Naturalist. 



Photo from life by Dr. R. W. 



Subclass IV. Dipnoi (Lung-fishes). Fishes with a persistent notochord and 

 the internal skeleton incompletely ossified; soft cycloid scales; spiral valve in the 

 intestine, the swim-bladder used as a lung, the auricle partly separated into two 

 chambers, paired appendages with a central axis producing a flapper rather than 

 a fin (Fig. 1 77). There are only three or four living species, but these are especially 



