SYNOPSIS OF ANIMAL KINGDOM. 



623 



III. MAMMALIA. 



1. HYPOTHERIA. 



Tliis division is proposed by Prof. Huxley for a hypothetical type 

 of Mammal lower than anything at present known; but which it is 

 anticipated will be met with in rocks of later Palaeozoic age. 



2. PROTOTHERIA (on ORNITHODELPHIA). 

 Monotremata. Ornithorhynchus, '^'EcniDjrA. 



3. METATHERIA (on DIDELPHIA). 



Marsupialia. Didelphys (Opossum), ^Macropus (Kangakoo), 



Amphitherium, ^Diprotodon, Microlestes, 

 "^'Nototliermm, Phascolotherium, Placjiaulax, 

 Spalacotherium, '^'Tritylodon ? 



4. EUTHERIA (or MONODELPHIA). 



Edentata. Bradypus (Sloth), Myrmecophaga (Ant-eater), 



Dasypus (Armadillo), ^Glyptodon, *Mc(ja- 

 theriitm, '"''Mijlodon. 



Sirenia. Halicore (Dugong), *Manatus (Man^atee), 



^RnYTiNA, ^'Felsinotherium, Halithermm. 



Cetacea. Bal^na (Whale), Mesoplodon-, Phoc^na (Por- 



poise), Balainodon, Choneziphms, Squalodon. 



Insectivora. Erinaceus (Hedgehog), Sorex (Shrew), Talpa 



(Mole), Myogale { = Pal(Bospalax), Stereo- 

 gnathus. 



Cheiroptera. Vespertilio (Bat), Pteropus (Flying-fox), Rhino- 



LOPHUS. 



Dermoptera. Galeopithecus (Flying-lemur). (No fossil forms.) 



Rodentia. Arvicola (Vole), Castor (Beaver), Lepus 



(Habe), Mus (Mouse), Trogontherium. 

 ITngulata. 



a. Subungulata. 



1. Hyracoidea. 



2. Condylarthra. 



3. Proboscidea. 



4. Amblypoda. 



5. Toxodontia. 



b. ITngulata vera. 



6. Perissodactyla. 



Hyrax. 



"^Per ip tychus, * Phenacodus . 

 Elephas, '^'Pinotherium, Maatodon. 

 Coryphodon, '^'Plnoceras, ^Machoceras, 



lophodon, * Uintatherium. 

 '^'Toxodon, '^' Typotherium. 



*Loxo- 



Artiodactyla. 



EQXTt7s(HoRSE), Rhinoceros, TAPIR,*^wc7^^Y7^enM»^, 

 Ilipparion, Hyracotherium, Palceotherium. 



Bos (Ox), Cervus (Deer), Hippopotamus, Sus 

 (Pig), Anoplotiierium, Bichodon, Hyopotamus. 



