BRANCH ARTHROPOD A ; CLASS ARACHNID A : SPIDERS 235 



under stones and boards are hunting spiders, belonging 

 to the family Lycosidae and are called the running spiders 

 (fig. 96). They -live in burrows in the ground, coming 

 out to stalk and chase their prey. The eggs are laid in 

 globular egg-sacs which are often carried about, attached 

 to the spinnerets, by the female (fig. 97). The young 

 spiderlings after hatching, in some species, climb on to 

 the mother's back and are carried by her for some time. 

 Other kinds of wandering or hunting spiders are the crab- 

 spiders (Thomisidae) (fig. 98), which run sidewise or back- 

 ward as well as forward, and the black and red, fierce- 



FIG. 98. A crab-spider (Thomi- FIG. 99. A jumping spider (Atti- 

 sidae). (From Jenkins and Kellogg.) dae.) (From Jenkins and Kellogg.) 



eyed, stout-bodied little jumping spiders (Attidae) (fig. 99), 

 which leap on their prey. 



The sedentary or web-weaving spiders are of various 

 kinds. They may be grouped according to their spinning 

 habits into cobweb weavers (Therididae), small slim- 

 legged spiders which make the familiar unsymmetrical 

 cobwebs of houses and outbuildings ; funnel-web weavers 

 (Agalenidae), larger long-legged spiders of meadow and 

 field which spin a flat or concave horizontal web in the 

 grass with a silken tube leading down to the ground; 

 the curled-thread weavers (Dictynidae), which use in addi- 

 tion to the usual lines peculiar broad lines made of waved 

 or curled threads in their irregular webs made in fence- 



