276 LIVING THINGS IN THEIR ENVIRONMENT 



How many animals can you find and name ? 



see the numbers of tiny animals there. Ants go hurrying 

 away, a spider or two may be found, and perhaps the 

 round cocoon or egg case containing a number of baby 

 spiders. Other near relatives of the insects are the 

 " thousand leggers" or millipeds, worm-like creatures with 

 many legs. The pill bugs are wood lice that roll up into 

 a ball, from which they get their name. The sow bugs 

 are also wood lice, but cannot roll themselves into a ball. 

 These are closely allied to the lobster and crayfish. They 

 have jointed bodies and jointed legs and belong to the 

 group called crustaceans. 



The earthworm often makes part of the burrow under 

 boards and will withdraw quickly if disturbed. Earth- 

 worm burrows are interesting to follow, and if care is 

 taken in digging, you will sooner or later find its owner. 

 Earthworms differ from the crustaceans in not having 

 jointed legs, although the body is segmented or jointed. 



