42 THE STUDY OF INSECTS. 



when the young hatch they climb on their mother's back, 

 and are carried about for a time. The females of the genus 

 Dolomedes (Dol-o-me'des), which also belongs to this family, 

 carry their egg-sac in their mandibles until the young are 

 ready to hatch. At this time the mother fastens the egg- 

 sac in a bush, and spins a web of irregular threads about it, 

 among which the young spiders remain for a time. 



Family ATTID/E (At'ti-dae). 



The Jumping Spiders. 



The Jumping Spiders are of medium size, with a short body 

 and short stout legs (Fig. 49). They are common on plants, 

 logs, fences, and the sides of buildings. They 

 are very apt to attract attention by their pecul- 

 iar appearance ; their short stout legs, bright 

 colors, conspicuous eyes, and quick, jumping 

 movements being very different from those of 

 ordinary spiders. 



The eyes are arranged in three or four rows ; 

 FlG -J? ~fl ttus the front middle pair are the largest, and are 



nubilus. (From r & ' 



R e o^onCot^ ver y conspicuous. These self-possessed spiders 

 ton insects.) are a b] e to stare an ordinary observer out of 

 countenance. They move sidewise or backward with great 

 ease, and can jump a long distance. They make no webs 

 except nests in which they hide in winter or when moulting 

 or laying eggs. 



In certain members of this family the body is longer 

 than in the typical forms, and ant-like in appearance. 



Order Acarina (Ac-a-ri'na). 



The Mites. 



In this order the abdomen is unsegmented and fused 

 with the thorax, giving the entire body a more or less sac- 

 like appearance. In many the body is marked by numerous 



