500 



ZOOLOGY 



SECT. 



The Aard-varks {Oryderopus, Fig. 1116) have a thick-set body, 

 the head produced into a long muzzle with a small tubular mouth, 



«I|W 



Fig. 1116. — Aard-vark {Oritcteropus capensis). (After Vogt and Specht.) 



the pinnEe of great length, the tail long and thick. The fore-limbs 

 are short and stout, with four toes, the palmar surfaces of which 

 are placed . on the ground in walking. The hind-limb is five-toed. 

 The surface is covered by a thick skin with sparse hairs. 



Fig. IIIY.— Killer (Orea gladiator). (After True.) 



The Cetacea (Fig. 1117), among which are the largest of 

 existing Mammals — some reaching a length of 80 or 90 feet — are 



