XIII 



PHYLT^M CHORDATA 



507 



dorsal surface, and some of them have preliensile tails. The Agoutis 

 and the (Japybara (H//drGchcerus) have hoof-like vlaws {lJasi/2n'oda), 

 the hitter havingf webs between the digits. 



The Insectivora are, in general, small, furry, burrowing Mammals 

 with plantigrade limbs and an elongated muzzle, liut there is a 

 considerable range of modification witiiin the order in adaptation 

 to diiferent modes of life. The Colugos (Galeopithecus, Fig. 1122) 

 have a fold of skin (patagium) extending along each side of the neck 

 and body and continued between the hind-legs, enclosing the tail ; 





Pi(i. llf!2.— Galeopithecus. (After \'ogt and Specht.) 



the fore-and hind-feet are both Avebbed, and the tail is prehensile. 

 The Hedgehog (Urinaceus) has the surface beset with pointed 

 spines. The Moles {Talpa) and their allies, which are active 

 burroAvers, have the limbs very short and stout and provided with 

 extremely strong claws. The jumping Shrews {Macroselididai) 

 have slender limbs adapted to progressing by leaps on the surface 

 of the ground. 



The Chiroptera (Fig. 1123) are the only Mammals which are 

 capable of active flight. The fore-limbs have the segments greatly 

 elongated, especially the fore-arm and the four ulnar digits, and 



I I 2 



