Classification of Animals 



281 



I. Dipnoi, Eel-like, with gills 

 and bladder-like lungs 



SOME ORDERS AND COMMON GENERA OF FISHES. 



1 . Australian lungfish, Ceratodus 



2. S. American mudfish, Lepido siren 



3. African mudfish, Protopterus 



1. Cod, Gadus 



2. Herring, Clupea 



3. Bluefish, Pomatomus 



4. Bullhead, Ameiurus 



5. Toadfish, Batrachus 



6. Searobin, Prionotus 



7. Rockfish, Roccus 



8. Perch, Perca 



9. Bass, Micropterus 



10. Salmon, Salmo 



11. Flounder, Paralichthys 



12. Flying fish, Exoccetus 



13. Dogfish, Amia 



14. Pickerel, 5^5; 



15. Trout, Salvelinus 



1 6. Whitefish, Coregonus 



17. Snakefish, Synodus 



1 8. Anchovies, Stole phorus 



19. Shad, Dorosoma 



20. Ladyfish, Albula 



21. Minnows, Notropis 



22. Suckers, Catostomus 



23. Catfish, Ameirus 



24. Smelts, Mallotus 



25. Eels, Echelus 



26. Swordfish, Remora 



27. Mackerel, Scomber 



28. Halibut, Hippoglossus 



2. Teleostei, &<?wy ;Mes 



Ganoids, heterocercel tail, skele- 

 ton incompletely ossified 



4. Elasmobranchs, uncovered gills, 

 cartilaginous 



Ii. Spoonbill, Polyodon 



2. Sturgeon, Acipencer 



3. Gar-pike, Lepisosteus 



4. Mudfish, Amia 



1. Dogfish, Squalus 



2. Shark, Carcharhinus 



3. Ray, Torpedo 



4. Skate, Raja 



5. Sea-devils, Mania 



6. Chimaera 



