4i8 



DEFINITIONS OF SYSTEMATIC NAMES 



Chelone, genus of turtles, green turtle. 



Chelydra, genus of turtles, snapping 

 turtle. 



Chelydrosaurus, genus of extinct stego- 

 cephalous amphibia. 



Chimaera, genus of peculiar deep-water 

 sharks. 



Chimaeroids, order of shark-like fishes; 

 Holocephali. 



Chiroptera, order of mammals, bats. 



Chlamydoselache, genus of primitive deep- 

 sea sharks from Japan. 



Cholcepus, genus of edentates, sloths. 



Chondrostei, order of ganoid fishes, stur- 

 geon. 



Chrysophrys, genus of fishes; sea bream of 

 Europe. 



Chrysothrix, a genus of So. American 

 monkeys. 



Cistudo, genus of chelonia; box turtles. 



Cladoselache, genus of extinct sharks. 



Clupeidae, family of fishes including her- 

 ring, shad, alewives and menhaden. 



Cobitis, genus of fishes; loaches. 



Coregonus, genus of fresh-water fishes; 

 white fish. 



Crocodilia, order of reptiles including the 

 alligator. 



Crotalus, genus of snakes, rattlesnakes. 



Cryptobranchus, genus of tailed amphi- 

 bians with permanent gill slits; hell- 

 bender of No. America. 



Cyclostomes; class of vertebrates without 

 jaws, including lampreys and hag fishes. 



Cynognathus, genus of extinct thero- 

 morph reptiles. 



Cyprinids, family of freshwater fishes, 

 carp, minnows. 



Delphinus, genus of whales; dolphins. 



Derotremes, tailed amphibia with perma- 

 nent gill slits. 



Desmognathus, genus of salamanders. 



Didelphys, genus of marsupials, opossums. 



Diemyctylus, genus of small spotted sala- 

 manders. 



Dinosaurs, extinct terrestrial reptiles, 

 some of enormous size. 



Dipnoi, sub-class of fishes with gills and 

 lungs, lung-fishes. 



Discosaurus, genus of stegocephalous 

 amphibians. 



Dromatherium, genus of extinct, primi- 

 tive mammals. 



Echidna, genus of monotremes, spiny ant- 

 eaters of Australia. 



Edentates, order of mammals including 

 sloths, armadillos, etc. 



Elasmobranchs, a sub-class of vertebrates 

 including the sharks and skates. 



Embiotocids, family of fishes from the 

 Pacific which bear living young; surf 

 perches. 



Epicrium, genus of caecilians. 



Erinaceus, genus of insectivorous mam- 

 mals; hedgehogs. 



Erythrinus, genus of tropical fishes. 



Euornithes, a name given to all recent 

 birds. 



Eupomatus, fresh-water sunfish. 



Eurycormus, genus of fossil ganoid fishes. 



Firmistemia, anurous amphibia with the 

 halves of the sternum united to each 

 other; frogs. 



Fulica, genus of water bird; coots. 



Galeocerdo, genus of selachians; tiger 

 sharks. 



Galeopithecus, a flying mammal from 

 Asia of uncertain position. 



Galeus, genus of sharks; dogfish. 



Callus, genus of birds including the com- 

 mon fowl. 



Gambusia, genus of fiishes; top-minnow. 



Ganoids, sub-class of fishes intermediate 

 between sharks and bony fishes; stur- 

 geon, garpike, etc. 



Geococcyx, a genus of cuckoos. 



Geotriton, a genus of European salaman- 

 ders. 



Gerrhonotus, genus of lizards. 



Glyptodon, genus of edentates allied to 

 armadillos. 



Gnathostomes, vertebrates which have 

 jaws; includes all except cyclostomes. 



Gobiids, family of small fishes, mostly 

 marine; gobies. 



Gymnophiona, order of amphibia without 

 tail or legs; tropical; caecilians. 



Gj'mnotus, electric eel of So. America. 



Halmaturus, genus of kangaroos. 



