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, 
t 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 
t ordinary spiders. 
The eyes are arranged in three or four rows; 
Vx nudiiu 7 {From f ront middle pair are the largest, and are 
ReportonCoK* ver y cons pi cuous - These self-possessed spiders 
ton insects.) are a bl 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 
