58 AMERICAN SPIDERS AND THEIR SPINNINGWORK. 



themselves, and remain quiet for a week in the little nest thus formed. 



During this time every spider that approached was driven away. The 



males went out occasionally for food, but were not seen to carry 



Tending j n anv f or their mates. At the end of a week one of the males 



was observed to be pairing with his female, which had moulted 

 Females. . .' 



and was now mature. Successive observations showed that this 

 marital seclusion of young females was not an accidental result of artificial 

 conditions, but is a fixed habit of the males. It must be acknowledged 

 that it displays a remarkable degree of foresight and thoughtfulness the 

 immediate product, no doubt, of the emotional conditions of courtship. 



In all these various movements the position of the female of most 



species was simply one of watching. She followed the movements of her 



dancing partner, evidently with keen interest ; sometimes took 



The Fe- herself out of the way, but ordinarily was quite attentive until 



r^ "the entire rejection of the suit or the acceptance of the suitor. 



Two species formed striking exceptions to this rule, as far as 



the attitude is concerned. In one, the female lay close to the ground 



with her first legs directed forward and upward, while her second legs 



were held on the ground and stretched forward in front of her face. In 



another species, Marptusa familiaris, a similar attitude was assumed by 



the female, who lay on the ground with all the legs flattened out and 



the palps slightly raised, the only movement visible being the vibration 



of the palps. (See Fig. 25.) 



The attitudes of the males were far more varied. A reference to the 

 details of the notes as given will show that at least seven characteristic 



attitudes are assumed, namely : 



Sum- First, the legs of one side are bent over, doubled under, 



T.ffT'd an d s kept while the male engages in his semicircular dance, 

 of Males. (Saitis pulex.) 



Second, the body is well elevated, the abdomen lifted verti- 

 cally, all the legs upraised and stretched out, and the entire eight legs 

 touch the ground during the dance. (Synagales picata.) 



Third, the male, like the two females referred to above, lies flat on his 

 venter, keeping the tips of the fore legs touch- 

 ing (Icius) ; or the male lies flat, wriggling his 

 abdomen and frequently turning from side to side, 

 his legs held up- over his head, slightly diverging, 

 and often twisted, waved, or turned about. (Zygo- 

 ballus bettini.) (See Fig. 34.) 



PIG. 34. portion* of male zygo- Fourth, the two front pairs of legs are stretched 

 baiius bettini approaching fe- ou t i n a straight line from the cephalothorax, 



male. (After Peckham.) 1-11 -i i 



while the remaining legs are raised and curved 



and used for moving the body forward in its whirling dance. (Marptusa 

 familiaris.) 



