280 



PRINCIPLES OF ANIMAL BIOLOGY 



Order 17. C-olumbiformes. Pigeons, doves, sand grouse. 



Order 18. Psittaciformes. Parrots, macaws. 



Order 19. Cuculiformes. Cuckoos, plantain eaters. 



Order 20. Strigiformes. Owls. 



Order 21. C'aprimulgifornies. Goatsuckers, oil birds. 



Order 22. Micropodiformes. Swifts, hummingbirds. 



Order 23. C'oraciiformes. Kingfishers, hornbills. 



Order 24. Piciformes. Toucans, woodpeckers. 



Order 25. - Passeriformes. Broadbills, ovenbirds, lyrel)irds, songi)irds. 



Class VII. Mammalia. Warm-blooded animals which are covered with hair at 

 some stage, suckle the young, and have a diaphragm between thorax and abdomen. 

 Mammals. (Figs. 92, IgO, 193, 197, 272, 294.) 



SXJBCLASS I. PrOTOTHERIA. 



Order 1. Monotremata 

 Subclass II. Metathkria 



Order 1. Marsupialia 

 Subclass III. P]utheria. 



Order 1. Insectivora 



Order 2. Dermoptera 



Order 3. C'hiroptera 



Order 4. Carnivora 



Order 5. Pinnipedia 



Order 6. Menotyphla 



Order 7. Rodentia 



Order 8. Lagomorpha 



Order 9. Primates — With nails 



Egg-laying mammals. Monotremes. 

 Pouched mammals. Marsupials. (Fig. 157. > 



Viviparous mammals. 

 Order 10. 

 Order 11. 

 Order 12. 

 Order 13. 

 Order 14. 

 Order 15. 

 Order 16. 

 Order 17. 

 Order 18. 



With 

 claws 



True mammals. 

 Artiodactyla 

 Perissodactyla 

 Proboscidea 

 Hyracoidea > With 

 Xenarthra \ hoofs 

 Pholidota 

 Tubulidentata 

 Sirenia 



Cetacea 



} 



\(iuatic 



References 



CoMSTOCK, J. H. A Manual for the Study of Insects. Comstock Publishing Com- 

 pany. 



Pratt, H. S. A Maimal of Common Invertebrate Animals. A. C. McClurg & 

 Company. 



Storer, Tracy I. General Zoology. McGraw-Hill Book Company, Inc. For fuller 

 account of various groups, also biological principles. 



