CLASSIFICATION OF VERTEBRATA 58 



Rhea ; Palamedea ; Tinami ; Dicholophus, Swrypyga, 

 Cathartae, Opisthocomus, Rharnphastinae, Trochilidae. 



Edentata xenarthra ; Marsupialia (Didelphyidae and 

 Caenolestes) ; Camelidae (Auchenia, Llama) ; Dasyproctidae, 

 Caviidae ; Tapirus, Cariacus ; fossil : Litopterna and Toxo- 

 dontia; platyrhine Monkeys and Arctopitic 



Absence of Insectivora, excluding Shrews in Guatemala 

 and Costa Rica. 



2. Antillean or West-Indian sub-region. Characterised 

 by Hylidae, Boinae, Crotalinae, Crocodilus, Cracidae. 



Solenodontidae, Octodontidae. 



Absence of Elapidae and Chelydidae ; Marsupialia, Eden- 

 tata, Ungulata, Carnivora, Primates. 



ARCTOGAEA 



Characterised by Ganoidei, Cyprinidae. 



Fossil : Dinosauri. 



Galli alectoropodes. 



Abundance of Insectivora and Ungulata. 



III. PEEIARCTIC KEGIOK Characterised by Ganoidei, 

 Acipenser, Cyprinidae, Esocidae, Freshwater Salmonidae, Gastero- 

 steidae. 



Urodela, almost peculiar to the region. Pelobatidae. 



Colymbi, Alcidae, Tetrao, Lagopus. 



Bison, Rangifer, Cervus, Ovis, Castor, Lynx, Ursus, Talpa. 



Absence of: Dipnoi, Ratitae, Monotremata, practically of 

 Marsupialia and Edentata, Lemures. 



1. Palaearctic sub -region. Characterised by Disco- 

 glossidae. 



Lacertidae. Viperidae. 



Otididae. 



Erinaceidae, Talpa, Myogale, Rwpicapra, Capreolus. Cervus. 

 Alces. Sus. 



Absence of Passeres anisomyodae ; Marsupialia, Edentata. 



a. Eurasian province. Characterised by Acipenser and 

 Esox ; Tetrao, Castor, Talpa. 



b. Mediterranean province. Characterised by absence 

 of the genera mentioned in Eurasian province, and presence 



