//. TYPES IN DETAIL IVITH THEIR SUBORDINATE GROUPS. 5^ 



the teeth prolonged into sharp 

 points. Canines small or wanting. 

 Placenta decidnate and discoidal. 

 X Talpa. 



Order 13. Cheiboptera The only flying mammals. Toes 



of anterior limb exceedingly attenu- 

 ated, thus forming a framework 

 for a thin leathery web, which also 

 includes the hind limb and tail. 

 Thumb of fore limb and all the 

 hind toes free. Teeth pointed as 

 in Inseclioora. In many respects 

 similar to the next Order. Pla- 

 centa decidnate and discoidal. 



X Vespertilio. 



Order 14. Pnosniii A group of animals closely allied 



to the apes, but of a generally 

 lower structure. Appendages 

 hand-like, with opposing thumbs, 

 but with a double ntems, and a 

 diffuse though decidnate pla- 

 centa. The nails are developed 

 into claws. x Lemur, Tarsius. 



Order 15. PRr>L\TES Toes with flat nails. Appendages 



more or less hand-like, and gen- 

 erally fitted with opposing thumbs 

 for grasping. One pair of pectoral 

 mammary glands. Placenta de- 

 cidnate and discoidal. 



Sub-order i. Plaiyrrhim Nose flattened, nostrils separated 



by a broad septum, so that their 

 orifices look outward. Natives of 

 the Western Hemisphere, x Cebus. 



Sub-order 2. Catarrhini, Intemasal septum thin. Nostrils 



look forwards and downwards. 

 Natives of the Eastern Hemi- 

 sphere. X Cercopithecus, Gorilla, 



