SCHEME OF THE CLASSIFICATION xxiii 



PAGE 



Class V. REPTILIA 527 



Order 1. Testudinata 540 



" 2. Rhynchocephalia 546 



" 3. Crocodilini 547 



" 4. Squamata 550 



Class VI. AVES . 575 



Subclass 1. Archaeornithes 593 



" 2. Neornithes 594 



Order 1. Hesperornithiformes 594 



" 2. ichthyornithiformes 594 



" 3. Struthioniformes 595 



" 4. Rheiformes 596 



" 5. Casuariiformes 596 



" 6. Crypturiformes 596 



" 7. Dinornithiformes 597 



" 8. yepyornithiformes 598 



" 9. Apterygiformes 598 



" 10. Sphenisciformes 598 



" ii. colymbiformes 599 



" 12. Procellariiformes 600 



" 13. Ciconiiformes 601 



u ' 14. Anseriformes 602 



a 15. Falconiformes 603 



u 16. Galliformes 606 



" 17. Gruiformes 606 



" 18. Charadriiformes 607 



* 19. CUCULIFORMES 6lO 



" 20. CORACIIFORMES 6lO 



" 21. Passeriformes 614 



N Class VII. MAMMALIA 632 



Subclass I. Prototheria 642 



Order 1. Monotremata 645 



Subclass II. Eutheria 642 



Division I. DIDELPHIA 642 



Order 1 . Marsupialia 647 



Division II. MONODELPHIA 642 



Section A. Unguiculata 642 



Order 1. Insecttvora 649 



" 2. Dermoptera * 642 



