96 PROCEEDINGS OF THE ACADEMY OF [Jan., 



application (just as in the making of the base), and from 8.35 to 

 8.44 she spun a denser covering by brushing the spinnerets from side 

 to side. Finally she alternated the spinning upon the cocoon itself, 

 with spinning attachment lines from it to web. 



? No. 25 made her first cocoon on the horizontal surface of her web, 

 apparently not spinning a special base. 



? No. 75 made her second cocoon upon the surface of the web, and 

 after spinning a discoidal base oviposited upon it at 7.41 A.M.; she 

 occupied the time from 7.42 to 8.00 in spinning the cover. 



? No. 220 spun her cocoon in the same manner as did No. 79. 



One female, after making her cocoon at the angle of the wall and 

 floor of the cage, spun over it several thin, concentric, arched lamellae 

 of silk, evidently a protection. In a few cases the female attaches 

 foreign particles, as the remains of insects, to the surface of the cocoons, 

 but this was not done with the majority of the cocoons. The cocoons, 

 even those of the same spider, are placed in most diverse positions, 

 some horizontally and some vertically, some upon the web and some 

 away from it. 



The number of cocoons made and the dates of construction were 

 as follows: 



(1) $No. 25: May 31 (hatched June 9); May 29; June 10 or 11 

 (hatched July 5) ; June 20 (hatched July 16) ; July 2 (did not hatch) ; 

 July 9 (hatched July 31) ; July 21 (not all the eggs hatched) ; August 1 

 (hatched). A total of 8 cocoons made by an unusually small female. 



(2) 9 No. 75 : May 23 (hatched June 14) ; June 7 (destroyed by the 

 mother); July 5 (hatched July 30); July 17 (hatched August 2). A 

 total of 5 cocoons. 



(3) ? No. 79: May 24 (hatched June 19) ; June 7 (hatched July 5) ; 

 June 19 (hatched July 12) ; June 29 (hatched July 19) ; July 7 (did 

 not hatch); July 17 (hatched August 9); August 1 (hatched); August 

 21 (hatched). A total of 8 cocoons. 



(4) 9 No. 117: June 10 (hatched July 6); June 26 (none of the ova 

 developed); July 3 (hatched July 23); July 12 (hatched July 29); 

 July 27 (hatched August 20) ; August 8 (hatched) ; August 28 (hatched 

 September 29). A total of 7 cocoons. 



(5) 9 No. 118: May 31 (hatched June 5). 



(6) 9 No. 219: July 4 (hatched July 24); July 28 (hatched August 

 21); August 21 (hatched). A total of 3 cocoons. 



(7) ? No. 220: June 29 (hatched July 27) ; July 16 (hatched August 

 2); July 30 (hatched August 22); August 21 (hatched). A total of 

 4 cocoons. 



