ADDITIONAL PACTS ABOUT THE MYRIAPODS. 65 



Make a table of diiferences between a butterfly and 

 a caterpillar, and in a parallel column compare the 

 thousand legs, in this manner : — 



Body divisions. . 



Eyes 



Wings 



Mouth parts. . . . 



Food 



Locomotion .... 

 Body Coverings. 



Antennae 



Butterfly. 



3 



compound , 



4 



sucking . . 

 liquid 



fly 



scales 



j long and 

 ] knobbed 



Caterpillar. 



1 



group of simple 



none 



biting 



solid 



crawl 



hair or naked... 

 short and in- 

 conspicuous 



Thousand Legs. 



From the similarities manifested by the foregoing 

 table, you will probably conclude that a caterpillar re- 

 sembles a thousand legs more closely than it does a but- 

 terfly. 



Additional Facts About the Myriapods. 



The centipede and thousand legs are taken to rep- 

 resent the class Myriapoda. The centipedes belong 

 to the order Chilopoda ; and the thousand legs belong 

 to the order Chilognatha. 



Make a table of differences between the two. 



The centipede from which the outline is made, Scol- 

 opocryptops sexspinosus, is a small animal and is found 

 throughout the eastern and southern parts of the 

 United States. It is found usually under stones and 

 logs which lie on the ground. Its food is principally 

 earthworms, which it pursues into their burrows. It 

 is very active, and the strong maxillipeds enable it to 

 obtain a very firm hold on the body of the earthworm. 

 The hind pair of legs is directed backward, thus fur- 

 nishing it an anchor which will prevent its being 

 dragged along by the muscular efforts of the earthworm. 

 Living entirely in dark places, it has no need for eyes, 

 and the name Scolopocryptops indicates their absence. 



