184 INTRODUCTION TO ZOOLOGY. 



BRANCH VIII. VERTEBRATA. 



CLASS 1. Pisces. 



Order l. Leptocardii. — Amphioxus. 



3. Marsipobrancliii. — Lamprey. 



3. Elasmobranchii. — Sharks and lays. 



4. Ganoidei. — Garpike. 



5. Teleostei. — Nearly all common fishes. 

 CLASS 3. Batrachia. 



Order 1. Proteida. — Persistent gills. Proteus. 



3. fjrodeta.'— Salamander. 



3. Anura. — Frog and toad. 

 CLASS 3. Reptilia. 



Order 1. Ophidia. — Snakes. 



3. Laoertilia. — Lizards. 



3. Chelonia. — Turtles. 



4. Crocodilia. — Alligator. 

 CLASS 4. Aves. 



Order 1. Cursores. — Ostrich. 



3. Steganopodes. — Cormorant, pelican. 



3. Pygopodes. — Loon. 



4. Longipennes.- — Gulls. 



5. Tubinares. — Petrel. 



6. Anseres. — Geese and ducks. 



7. Herodiones. — Herons. 



8. Paludicolce. — Marsh birds. Crane. 



9. Limicolce. — Shore birds. Snipe. 



10. Raptores. — Hawks and owls. 



11. Psittaci. — Parrots. 



12. Gallince. — Chickens and turkeys. 



13. Columbce. — Pigeons. 



14. Coccyges. — Cuckoos. 



15. Pici. — Woodpeckers. 



16. Jlfac/iroc/iires. —Humming birds. 



17. Passeres. — Sparrows, etc. 

 CLASS 5. Mammalia. 



Order 1. Monotremata. — Ornithorhynchus. 



3. Marsupialia. — Opossum. 



3. Edentata.— Sloth. 



4. Rodentia. — Rabbit. 



5. Insectivora. — Hedgehog, mole. 



6. Cheiroptera. — Bat. 



7. Cetaoea. — Whales and dolphins. 



8 . Sirenia . — Man atee . 



9. Proboscidea. — Elepliant. 



10. Ungulata. — Horse, cow. 



11. Carnivora. — Cat, dog. 



12. Pnwafes. —Monkeys, man. 



