1903.] NATURAL SCIENCES OF PHILADELPHIA. 75 



position and commenced the coition. The postures and the mode 

 of copulation were as in the preceding case; the right palpus was 

 employed 84 times and the left 81 times. This copulation began at 

 7.38 and ended at 8.32|-, when she struggled beneath him and he 

 cautioiLsly moved away from her, when I put him into another cage. 

 On August 25 the same male was put with her again, at 2.42 P.M. 

 He courted her steadily, though she made several jumps at him, 

 and he even followed her up the wall still courting. At 4.05 I was 

 obliged to leave, and returning at 4.28 found them in copulation, 

 which continued up to 5.03, when she struggled and he left her. She 

 did not attempt to kill him at first, and he followed her still courting; 

 but about two hours afterward she killed and ate him. 



(3) ?No. 278 was not fully mature. d^No. 275 was placed with 

 her for half an hour on July 16; they grappled, and after that re- 

 mained quiet. On July he was introduced again and began courting 

 at 5.02, as soon as he saw her, but she ran from him. 



(4) 9 No. 326 finished her final moult on July 24. d'No. 275 was 

 placed with her on July 25 and 26, but courted for only a short while 

 each time. There was no courtship at all on July 30 and August 22. 



There is, accordingly, in this species a decided courtship; the male 

 differs from the female in his smaller size and in the black color of 

 a portion of his fore-legs, and these legs (and the palpi also) are moved 

 in a particular manner during the courtship. Observation shows 

 that the male recognizes the female as such at a distance of at least 

 six inches. The male's approach to the female is very slow, a kind 

 of creeping, not at all similar to the vehement approach of certain other 

 Lycosids. The male will court immature females. The female, if 

 eager, gives the signal of willingness to the male by touching him lightly 

 with her first pair of legs, when he immediately embraces. In the 

 observed cases, with one exception, the female killed the male at the 

 end of the copulation. The peculiarity of the copulation is that the 

 right and left palpi are inserted in the epigynum in almost strict 

 alternation, that these insertions are very brief and numerous, and 

 that the intervals between them are markedly short. One female 

 copulated twice with the same male at an interval of three days. 

 The time duration of the longest copulation watched was 59 minutes, 

 of the next longest 55 minutes. 



Cocooning. — $ No. 271 made a cocoon in the second week of Septem- 

 ber, carried it attached to her spinnerets (the normal way) and is still 

 carrying it. 9 No. 273 made her cocoon during the first week of 

 September, but dropped it from her spinnerets about the 25th of that 



