DEFINITIONS OF SYSTEMATIC NAMES. 



Acanthias, genus of sharks including com- 

 mon dogfish. 



Acipenser. genus of ganoids; sturgeon. 



Aglossa, tongueless toads from Africa and 

 South America. 



Allantoidea, the higher vertebrates with 

 allantois; reptiles, birds and mammals. 



Amblystoma, genus of tailed amphibians, 

 largely American. 



Amia, genus of ganoid fishes peculiar to 

 America. 



Ammoccetes, the larval stage of the lam- 

 preys. 



Amniotes, division of vertebrates with 

 amnion and allantois in development; 

 reptiles, birds and mammal. 



Amphibia, class of vertebrates, young with 

 gUls, adults with lungs; frogs, toads and 

 salamanders. 



Amphioxus, fish-like form without verte- 

 brae, type of group of Leptocardii. 



Amphipnous. eel-like fishes from India. 



Amphisbaenans, legless lizards. 



Amphiuma, genus of tailed amphibians 

 with rudimentary legs and gill slits; 

 southern U. S. 



Anallantoidea, vertebrates without an 

 allantois ; ichthyopsida. 



Anamnia. vertebrates without an amnion; 

 ichthyopsida. 



Anguis, genus of footless lizards. 



Anser, genus of birds including geese. 



Anthropoids; sub order of primates includ- 

 ing the higher apes and man. 



Anura, order containing the tailless amphib- 

 ians; frogs and toads. 



Aquila, genus of birds including eagles. 



Archaeopteryx. a fossil bird with teeth and 

 a reptilian tail 



Archegosaurus. genus of extinct stego- 

 cephal amphibians 



Arcifera, group including toads and tree 

 toads. 



Arthrodira, order of extinct dipnoi (lung- 

 fishes) some very large. 



Artiodactyla, ungulate mammals with even 

 number of toes; cattle, sheep, deer. 



Astroscopus, genus of electric fishes; 

 marine. 



Atelodus, genus of two-toed rhinoceros. 



Aves, the class of birds. 



Bdellostoma, genus of myxinoids; hag 

 fishes of the Pacific. 



381 



Belone, genus of fishes; bony gars. 

 Bombinator, genus of European toads, 



unke. 



Bradypus, genus of edentate sloths. 

 Branchiosaurus, genus of extinct stego- 



cephal amphibia. 



Bufo, genus of amphibians, toads. 

 Buteo, genus of raptorial birds, hawks. 

 Butyrinus, genus of herring-like fishes. 



Caecilians, a group of legless tropical am- 

 phibians. 



Caiman, genus of crocodiles. 

 Calamoichthys, genus of ganoid fishes from 



Africa. 



Callopterus, genus of extinct ganoid fishes. 

 Camptosaurus, genus of extinct dinosaur 



reptiles. 

 Capitosaurus, genus of extinct stegocepha- 



lous amphibia. 



Carcharias, genus of sharks; sand shark. 

 Carinatae, birds with a keel to the sternum, 



includes all living birds except ostriches. 

 Carnivores, order of flesh-eating mammals; 



cats, dogs, bears, weasels, seals. 

 Castor, genus of rodents, beaver. 

 Ceratodus, genus of dipnoi (lung-fishes) 



from Australia. 



Ceratophrys, genus of So. American toads. 

 Cervus, genus of Ungulates, common deer. 

 Cestracion, genus of sharks from the 



Pacific. 



Cetacea, order of mammals, w r hales. 

 Chauna, genus of So. America crane-like 



birds; hooded screamers. 

 Chelonia, order of reptile turtles. 

 Chelone, genus of turtles, greec turtle. 

 Chelydra, genus of turtles, snapping turtle. 

 Chelydrosaurus, genus of extinct stego- 



cephalous amphibia. 

 Chimaera, genus of peculiar deep-water 



sharks. 

 Chimasroids, order of shark-like fishes; 



Holocephali. 



Chiroptera, order of mammal 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 



monkevs. 



