The Structure and Habits of Spiders. 95 



course of time, by the tubes, H, H, into the ovi- 

 duct, and fertilizes the eggs about the time they 

 are laid. 



One palpal organ is usually inserted at a 

 time, and, after a while, taken out, and replaced 

 by the other ; this change being repeated many 

 times by the same spider. Among the Lycosi* 

 da, Fig. 10, the male leaps on the back of 

 the female, and is carried about by her, Fig. 



Fig. 52. 



52. He reaches down at the side of her abdo- 

 men, and inserts his palpi in the epigynum 

 underneath. In Linyphia and Thetidion the 

 male and female live peaceably together for a 

 long time in the same web. The male reaches 

 from in front under the female, Fig. 53, and 

 inserts his palpal organs, one after the other, 

 for hours together. In Agalena the male is 

 the stronger of the two sexes. He takes the 



