CLA SSIFICA TION OF VER TEBRA TA 59 



of genera otherwise Ethiopian or Indian ; Testudo, Geckones, 

 Viverra, Hyaena, Felis leo, Hyrax. 



2. NEARCTIC SUB -REGION. Characterised by Lepidosteus, 

 Amia, Polyodon. Urodela. 



Chelydridae, Trionychidae, Crotalidae. 



Of Ungulata are present only Bos, Ovibos, Haploceros, 

 Antilocapra, Cervus, Cariacus, Alces, Dicotyles. 



Didelphys. Condylura. 



Cathartae, Meleagris, Tyrannidae. 



Absence of Viperidae, Agamidae, Varanidae. 



Absence of Otididae, Turnices, Coraciae with the sole ex- 

 ception of a few species of Ceryle (Alcedinidae). 



Absence of Sus and Monkeys. 



a. CANADIAN PROVINCE. Characterised by Ovibos, Haplo- 

 ceros, Alces, Eangifer, Cervus, Condylura. Trionychidae. 



b. SONORAN PROVINCE. Characterised by Antilocapra, 

 Dicotyles, and considerable influx of otherwise neotropical 

 forms, as Didelphys, Tatusia, Cariacus, Felis concolor. 



Alligator, Iguanidae, etc. 



IV. PALAEOTKOPICAL REGION. Characterised by 

 Crocodiles, Trionychidae, Varanidae, Chamaeleons, hooded JEla- 

 pidae, Ratitae, Trogones, Bucerotinae, Upupinae, Treron, Pittidae. 



Lemures, catarrhine Monkeys, large Felidae, Hyaenidae, 

 Viverridae, Hystricidae, Tragididae, Rhinoceros, Elephas, Eden- 

 tata nomarthra. 



Almost entire absence of Urodela. 



1. AFRICAN SUB -REGION. Characterised by Chelydidae, 

 Pelomedusidae, Crocodilus, Chamaeleo. 



Hippopotamus, Hyomoschus ; Lemures ; richness in Ungu- 

 lata, especially Antilopes, Bovinae, Equus. 



Absence of Urodela, Hylidae, Pelobatidae, Crotalidae ; 

 Cervidae, and Ursidae. 



a. ETHIOPIAN PROVINCE. Characterised by Protopterus, 

 Polypfarus, Ccdamoichthys. 



Xenopus. 



Amphisbaenidae. Varanidae. Pythonidae. 



Struthio, Podica, Serpentarius, Colii, Musophaginae. 



Orycteropus, Manis, Hyrax, Giraffa, Felis leo, Gorilla, 

 Troglodytes, Lemures. 



