228 FISHES 



CLASSIFICATION OF THE EXAMPLES 



Class — Pisces. 



Subclass — Elasmobranchii. 



Order — Selachii. 



Types of Order. 



Sphyrna zygcena — Hammer-headed shark. 



Raja erinacea — Ray. 



Carcharhinus glaucus — Blue shark. 



Trygon sabina ^— Sting ray. 



Torpedo occidentalis — Electric ray. 



Pristis pectinatus — Sawfish. 



Subclass — Teleostomi. 



Order — Chondrostei. 



Types of Order. 



Acivenser sturio > „, 



. . , ■ , ^bturgeons. 



Acipenser rubicundus J ° 



Scaphirhynclvas platyrhynchus — Shovel-nosed 



sturgeon. 



Order — Holostei. 



Type of Order. 



Lepidosteus osseus — Gar pike. 



Order — Teleostei. 



Types of Order. 



Oncorhynchus tschawytscha — Chinook salmon. 



Gadus callarias — Cod. 



Clupea harengus — Herring. 



Scomber scomhrus — Mackerel. 



Anguilla chrysypa — Eel. 



Cypsilurus calif amicus — California flying fish. 



Perca flavescens — Perch. 



Subclass — Dipnoi. 



Order — Monopneumona. 



Type of Order. 



Ceratodus Jorsteri — Lung fish. 



Order — Dipneumona. 



Types of Order. 



Protopterus annectens 1 _ . , 



r • J ■ J 1- Lung nshes. 



Lepidosiren paradoxa. J 



