THE SORTING OF PLANTS AND ANIMALS 89 



5. Plover order. {Examples. Snipe, curlew, rail, sandpiper.) 



6. Gallinae. {Examples. Hen. turkey, guinea fowl, peacock, pheas- 



ant, partridge, ptarmigan.) 



7. Columbae. {Examples. Pigeons, doves.) 



8. Passeres. Perching birds ; includes about one half of our na- 



tive birds. {Examples. Sparrows and finches, swallows, 

 robins, thrushes, crows, etc.) 



9. Raptores. Predatory birds. {Examples. Eagle, hawk, owl.) 



10. Pici. {Examples. Woodpeckers, sapsuckers.) 



11. Cuckoo famfly (including kingfishers). 



12. Whippoorwill order (including humming birds). 



Class 5 — Mammalia (mammals). Warm-blooded; hairy exoskele- 

 ton ; diaphragm ; suckle young. 



1. Monotremata. Egg-laying mammals. {Examples. Duckbill, 



spiny anteater.) (With the exception of these two. all 

 mammals develop the young within the body of the 

 mother.) 



2. Marsupials. Carry their immature young in a special abdom- 



inal pouch. (Examples. Kangaroos, wombats, opossums.) 

 The rest of the mammals are divided into the following orders : 



3. Edentata (''toothless" mammals). {Examples. Sloths, arma- 



dillos, hairy anteaters.) 



4. Cetaceans. (Examples. Whales, dolphins, porpoises.) 



5. Sirenia. {Exa?nples. Sea cow, manatee, dugong.) 



6. Ungulata ("hoofed" animals). 



a. Odd-toe. (Examples. Horses, zebras, rhinoceros.) 



b. Even-toe. (Examples. Ox, sheep, antelope, camel, giraffe, 



deer, pig, hippopotamus.) 



c. Proboscidea (elephants). 



7. Rodentia (''gnawers"). The largest order. {Examples. Rab 



bits and hares, squirrels, chipmunks, porcupine, gopher^ 

 muskrat, rats, mice.) 



8. Insectivora (''insect-eaters"). {Examples. Moles, shrews, 



hedgehog.) 



9. Chiroptera ("hand- wings"). {Examples. Bats, vampire.) 



10. Carnivora ("flesh-eaters"). (Examples. Cat family, dog fam- 



ily, bears, weasel, seal, walrus, otter, mink, skunk, badger, 

 raccoon, etc.) 



11. Primates (''the first," or leading, order of animals, including 



man). This important order consists of the following 

 families : 



