PHYLUM CHORDATA 



223 



This is a small sub-order, including the File-fishes, Globe-fishes, 

 Sun-fishes and Coffer-fishes (Fig. 880). 



Fig. 880.— Ostracion (Cuffer-flsh). br. ap. branchial aperture!; d.f. dorsal fin ; pct.f. pectoral 

 fin ; V, /. ventral fin; (After Bay.) 



Suh-order f.—Lopliobranchii. 



Teleostei having no pneumatic duct. The gills are not comb- 

 like, but have their filaments arranged in tufts (Fig. 881, B). The 



Fig. 881.— Hippocampus (Sea-horse). In B the operculum is removed to show the gills, 

 lyr. ap. branchial aperture ; brd. p. brood-pouch ; d. /. dorsal fin ; ff. gills ; pet, f. pectoral fln. 

 (From Claus and Gllnther.) 



