1903.] NATURAL SCIENCES OF PHILADELPHIA. 107 



(3) ? No. IS was put into the cage of cJ'No. 8 on M&y 2, but she 

 chased him; then cJ' No. 19 was introduced and copulated with her at 

 11.27, 11.29, 11. 29^ and 11.31 A.M. Two Theridiids of a smaller 

 species were put in at 12.00 M., so that five spiders were now together. 

 9 No. 18 sometimes would make amatory advances to c^No. 8, but he 

 (evidently not mature) fled from her. Several times she came into 

 contact with (?No. 19, but after a few excited advances he left her 

 each time. She always acted hostilely to the individuals of the 

 smaller species. She copulated with 6^ No. 19 at 12.42; this 6^ later 

 made a rush at the smaller d^ No. 8. The latter subsequently escaped, 

 and I removed c^No. 19 on May 4. On May 8 a freshly caught large 

 d^was introduced, but she seemed frightened by him. On May 9 she 

 copulated with c?No. 71 at 7.55 P.M.; he was left in her cage until 

 May 23, and copulations were noticed at 9.15 P.M., May 13, and 9.15 

 P.M., May 15. (A total of 8 copulations observed.) 



(4) ? No. 76. cJ^ No. 77 was introduced on May 13, but she remained 

 immovable, and was hostile to him next day, as she was to cJ'No. 85 

 on May 15, and to d'No. 77 on May 16. May 18, d'No. 77 copulated 

 at 6.59 and 6.59^ P.M. (Only 2 copulations.) 



(5) ? No. 124 copulated with d' No. 123 on May 27, at 2.17, 2.22, 2.27 

 P.M., besides some unsuccessful attempts. The same d^made several 

 unsuccessful attempts on May 28, and one successful one. May 29 I 

 introduced him while she was feeding, she left her prey and signalled 

 vigorously, copulation at 5.49 P.M. May 30, copulations with the 

 same cJ^at 4.44 and 4.49 P.M.; and at 4.55 P.M. d^No. 155 was intro- 

 duced, but he would not answer her amatory signals. On June 1 

 d^No. 123 made protracted but unsuccessful attempts to copulate at 

 5.43, 5.46, 5.47 and 5.47^ P.M. June 2 she copulated with d'No. 128 

 at 10.28^, 10.29 and 10.32 P.M. June 8 I put in d'No. 128 again at 

 1.36 P.M., while she was eating a beetle; she signalled immediatel}' 

 while remaining close to the beetle, he went toward her and mistakenly 

 tried to copulate with the enshrouded beetle, but ultimately copulated 

 with her at 1.40 and 1.42, June 12 I put in c^No. 128 again, copula- 

 tions followed at 8.59 and 9.16 P.M.; I left them together, and next 

 morning found she had eaten him . (A total of 23 copulations observed , 

 of which a number were unsuccessful.) 



(6) 9 No. 129 copulated with d" No. 123 at 8.31 P.M., May 28; later 

 he attempted to insert his palpi but in vain, she then became aggressive. 

 June 2 she copulated with c?No. 155 at 8.37 and 8.43 P.M. June 7, 

 with d^No. 155, at 8.24 P.M., half a minute after his introduction. 

 June 15, with the same d*, at 7.23 V.'Sl. (A total of 5 observed copu- 

 lations.) 



