CHORD ATA. 215 



Order 8. Tnsectivora. Small pentadactyle plantigrade or sub-planti- 

 grade Mammals, with clawed digits and (almost always) clavicles. 

 Always more than two lower incisors, canines small, molars with fangs 

 and sharply pointed crowns. Placenta discoidal Erinaceus Europaeus, 

 hedgehog. Sorex, shrew. Talpa, mole. 



Order 9. Cheiroptera, bats. Mammals in which there is a flying mem- 

 brane (patagium) stretched between the body, limbs, and elongated digits 

 of the manus. Dentition complete, incisors smaller than the canines. 

 Clavicles well developed, sternum keeled, mammae pectoral. Placenta 

 discoidal. 



(a.) Frugivora (Megacheiroptera), fruit-eating forms ; Pteropus edulis. 



(6.) Insectivora (Microcheiroptera), insectivorous or blood-sucking 

 forms; Vespertilio. Plecotus. Vampyrus. 



