SCHEME OF THE CLASSIFICATION xxiii 



PAGE 



Class V. REPTILIA 527 



Order i. TESTUDINATA 540 



" 2. RHYNCHOCEPHALIA 546 



" 3. CROCODILINI 547 



" 4. SQUAMATA 550 



Class VI. AVES * 575 



Subclass i. Archaeornithes 593 



" 2. Neornithes 594 



Order i. HESPERORNITHIFORMES 594 



" 2. ICHTHYORNITHIFORMES 594 



" 3. STRUTHIONIFORMES ' 595 



" 4. RHEIFORMES 596 



" 5. CASUARIIFORMES 596 



" 6. CRYPTURIFORMES 596 



" 7- DlNORNITHIFORMES 597 



" 8. ^EPYORNITHIFORMES 598 



" 9. APTERYGIFORMES 598 



" 10. SPHENISCIFORMES 598 



" II. COLYMBIFORMES 599 



" 12. PROCELLARIIFORMES 600 



" 13. ClCONIIFORMES 6oi 



" 14. ANSERIFORMES 602 



" 15. FALCONIFORMES . . 603 



u r6. GALLIFORMES 606 



" 17. GRUIFORMES 606 



" 1 8. CHARADRIIFORMES 607 



" 19. CUCULIFORMKS 6lO 



" 20. CORACIIFORMES 6lO 



" 21. PASSERIFORMES 614 



Class VII. MAMMALIA 632 



Subclass I. Prototheria 642 



Order i. MONOTREMATA 645 



Subclass II. Eutheria 642 



Division I. DIDELPHIA 642 



Order i. MARSUPIALIA 647 



Division II. MONODELPHIA .642 



Section A. Unguiculata 642 



Order i. INSECTIVORA . . 649 



" 2. DERMOPTERA 642 



