IGO 



AMERICAN SPIDERS AND THEIR SPINNINGWORK. 



Fig. 192. Argiope cophinariu luiinediate- 

 ly after ovipositing. The spider is be- 

 neath the mass of newly laid eggs which 

 she has just begun to overspin. 



Argiope 



cophi- 



naria. 



a trj'ing box, and sat up witli her until a late hour at night. During 

 a considerable portion of tlie evening she moved back and forth in the 



liox, spinning lines from one side to the oth- 

 er, and finally settled in one corner as though 

 to rest. Thereupon I retired. 



Next morning at 5.35 o'clock I visited the 

 V)ox, and found that the eggs had just been 

 laid, and enclosed within their first thin silk- 

 en pouch. A rectangular patch of j-ellowish 

 white silk was swung to the cross lines spun 

 the night before. Immediately beneath this 

 was a tuft of l)rownish silk, that enclosed a 

 tiny silken di.sh three-eighths of an inch in 

 diameter, which rested against the top piece, 

 witli its concavity downwards. Against this dish Prima had oviposited 

 her eggs, forcing them upward evidently as she liung in ijosition 

 beneath. At the time of my observation this was the position 

 of affairs. The eggs were in a hemispherical mass, and hung 

 downward, with no enclosure except the white silken pouch which 

 is the first covering the Orbweaver usually places upon the eggs. (Fig. 192.) 

 The mother remained for a few minutes beneatli her eggs, and then 

 began spinning the brown covering. Her back was downwards, and her 

 feet curved ujnvards, holding to tiie supporting lines or to the 

 edges of the top piece. Gradually moving herself around in a 

 horizontal plane, slie spun the threads ujtward against the top 

 l)art of the egg mass, attaching tlireads to the overhanging edges 

 of the- flossy tuft already described. This action and position are repre- 

 sented by Fig. 193. At six o'clock and eight 

 minutes she rested for a few moments, and 

 at that time her work presented the appear- 

 ance represented at Fig. 193. 



Unfortunately, she was much hampered 

 by having lost two legs, which hapi>ened 

 to be the most important for lier present 

 purpose, as one of them was the hind leg 

 used in spinning, and the other the first leg, 

 which is the guide, if I may so say, of the 

 spider's motion, being continually used to 

 feel the way as she progresses, and pilot ^"'■^^'- Argiope spinning up ti,e b 



^' r- & ' 1 padding around her eggs. The liind 



her into the jjroper course. Thus mutilated, 

 Prima probably was twice as long accom- 

 plishing her task as she otherwise would have been, since she only had 

 one leg with which to draw out and pack the silk as it issued from the 

 spinnerets. Nevertheless, she managed affairs very handsomely. 



The 



Brown 



Pad. 



rown 



padding around her eggs. The hind leg is 

 shown drawing out tlie silk, and the bunch 

 of loops is shown against the cocoon. 



