264 



Division Perissodactyla (Odd-toed Ungulates). 



Examples, Tapirus (Tapir). Dentition . Central 



Oxoo 



and South America, Malay. 

 Rhinoceros (Rhinoceros). Africa, India, 



Indo-Malaya. 

 Equus (Horse). 



Phenaeodus. Extinct (Eocene). Five digits 

 on fore and hind limbs. Probably a 

 remote predecessor of the Horse. 



Order Sirenia (" Sea-cows "). 



Examples, Manatus (Manatee). Coastal waters of, and 

 estuaries of rivers flowing into tropical 

 Atlantic. 



Halicore (Dugong). Coastal waters of Indian 

 and Pacific Oceans : coasts of Australia 

 and E. Africa, and the Red Sea. 



Order Rodentia. Incisors rootless. Without canines. Generally 

 plantigrade. 



Sub-order Duplicidentata (Two pairs of upper incisors). 



Example, Lepus (Rabbit, Hare). See pages 251 to 260. 



Sub-order Simplicidentata (One pair of upper incisors). 

 Examples, Sciurus (Squirrel). 

 Mus (Mouse, Rat). 



Castor (Beaver). Europe, North America. 

 Hystrix (Porcupine). Palaearctic, Ethiopian 



and Oriental Regions. 

 Cavia (Guinea-pig). 



Hydrochoems (Capybara). Aquatic. South 

 America. The largest living Rodent. 



Order Cheiroptera (Bats). 



Examples, Pteropus (Fox-bat). A fruit-eating bat. 



21 '52 

 Dentition -ov Madagascar, India, 



Australia, etc. 

 Vesperugo (Pipistrelle). An insectivorous 



bat. 

 Desmodus. A vampire, or blood-sucking 



bat. Incisors large and gouge -shaped ; 



molars abortive or absent. 



Order Primates. 

 Sub-order Lemuroidea (Lemurs). 



Examples, Lemur (Lemur). 



Tarsius. Indo-Malaya. 



