1903.] NATURAL SCIENCES OF PHILADELPHIA. 115 



follows : The female with her abdomen horizontal and ventral surface 

 down, her cephalothorax flexed at an angle downward; thee? below 

 her, his cephalothorax about vertical and his head almost touching 

 the ventral surface of her abdomen at the anterior end of the latter, 

 his abdomen flexed at more than a right angle with his cephalothorax ; 

 the long axis of his abdomen thus made a wide angle with the long 

 axis of hers, like a V. Thus they continued motionless until 2,19, 

 when he dropped to the floor, and when he attempted to climb into 

 the web again she chased him so vigorously that I removed him. On 

 June 7, at 7.55 P.M., c? No. 180 was put in; they embraced in copu- 

 latory attitude for a minute, but she moved her legs, and he left her 

 and went to another part of the web. At 8.17 she tried to enshroud 

 him, so I separated them. On June 14 I put in cJ^ No. 180 again, at 

 4.36 P.M. ; he remained quiet for six minutes, then climbed up and 

 touched her, whereupon she made her shaking motion. He then 

 hung beneath her, shaking the web very gently by a swaying of the 

 whole body, she responding in a similar way. At 4.47 she rushed at 

 him, and I removed him. 



(2) 9 No. 12 killed and ate mature 6" No. 88 on May 17, and an 

 immature c? on May 24, and made her first cocoon on May 27. On 

 June 23, c^No. 245 was introduced at 12.12 P.M. (the cocoon had 

 hatched on June 15). At 12.21 he started to move with long pauses, 

 while she was above him in the web and testing his movements by 

 draAving the web Hues taut. At 12.28 he inserted his palpi in her 

 epigynum for a second, then fell to a lower position upon the web. 

 At 12.30 he made several attempts to insert both palpi, and succeeded 

 half a minute later. The position of the two was as in the preceding 

 case, she hanging in the web by her posterior three pairs of legs, he 

 hanging to her by his inserted palpi, his anterior three pairs of legs 

 loosely embracing hers (and their claws hooked to web lines), his 

 fourth pair of legs directed behind him and also hooked to web lines. 

 The palpi were inserted by pressing them in this flexed position along 

 the ventral surface of her cephalothorax backward to her epigynum. 

 When inserted, a large vesicle or sac was evaginated from the lateral 

 side of each palpal organ. I watched the copulation from 12.30 to 

 12.55, when I was obliged to leave, and on my return at 1.25 found 

 them separated, he feeding on a beetle which she had previously 

 enshrouded. 



(3) ? No. 82. I put d" No. 87 with her from May 17 to Jlay 22, 

 when he w^as repeatedly observed to make advances toward and to 

 touch her, but she acted slightly hostile to him and no copulation was 



