84 PROCEEDINGS OF THE ACADEMY OF [Jan., 



is timid, or not very eager, he may wave only his palpi, and these 

 slowly and alternately instead of together. The male repeats these 

 motions several times, usually becoming more vehement each time, 

 then moves a step nearer the female, repeats them again, moves nearer 

 again, so that in a short time his outstretched shaking fore-legs come 

 in contact with the female. A virgin female usually flees before 

 him before accepting him, he eagerly following and repeating his 

 motions, even when he is not facing her. A female who has been 

 fertilized and is pregnant, first menaces him by slowly uplifting and 

 straightening out her first pair of legs toward him ; and if this does 

 not suffice to make him desist, she jumps at him when he comes too 

 close. In the latter case the male frequently escapes by leaping 

 over the female. The male seems the very incarnation of violent 

 passion, and his whole body shakes with it; only when the female 

 is so aggressive as to shake him, does he show distinct fear and cease 

 his motions; and if a male has been so cowed by a female, and is imme- 

 diately placed with another female, he will at first avoid the latter 

 also, this being a good example of memory. 



The following data will show the length of time of such courtship, 

 the male in each case having been removed from the female at the 

 end of the period of observation, and it being understood that copu- 

 lations were enacted only Avhen stated. 



9 No. 33. Put in d^ No. 32 for nearly two hours on May 4, no court- 

 ship, o' No. 38 for an hour next day, no courtship. cJ* No. 38 in the 

 evening of May 5, courtship for one hour. May 6, c? No. 38, court- 

 ship for half an hour in the morning, but none in the evening. cJ^ No. 

 38, courtship of one hour on May 7. The same d^ would not court 

 on the following day, though she walked over him twice (evidently 

 an invitation to copulation) ; immediately afterward o' No. 35 was put 

 in and courted for half an hour, then repeated it at intervals. ]\Iay 11, 

 O" No. 35 was put in for the whole evening, but there was no courtship, 

 although she displayed no hostility; nor would he court on ]\Iay 12. 

 On May 12 d^ No. 64 courted with few interruptions from 1.40 to 3.00 

 P.M., and from 4.00 to 4.35. May 13 and 14 d" No. 64 courted inter- 

 mittently. May 15 he courted actively from 8.00 to 10.15 P.M., 

 again on May 16 from 3.00 to 6.00 P.M., on May 17 from 7.20 to 

 10.00 P.M., on May 18 from 7.00 to 10.00 P.M., on May 19 from 

 2.00 to 4.00 P.M. and from 8.15 to 11.15 P.M., on May 24 for two hours 

 in the morning, on May 25 two hours in the afternoon, May 28 for about 

 an hour, May 31 for more than an hour. After that this female be- 

 came still more aggressive, and made her cocoon on June 10; she had 

 evidently been fertilized before her capture. 



