June, '11] cory: oviposition of SANNiNoroEA 335 



off. A coccinellid {M. maculata) found in this cage was brought into 

 the laboratory and placed in a cage with leaves having eggs of S, 

 exiiiosa on them. The beetle did not eat any of the eggs. 



August 1. Nine more eggs in cage B eaten. No insect found that 

 could have done the damage. 



August 9. Two eggs in cage B hatched during the time between 

 sunset and 8 a. m. the following morning. 



August 10. All remaining eggs in cage B hatched during the interval 

 between sunset and 7 a. m. 



Female No. 7, July 28. Female number seven placed in cage A at 

 10.05 and males placed with her at 11.00, 11.25 and 11.45. 



July 29. Twenty-one eggs found in cage A. 



August 1. Female number seven dead. She deposited seventy-five 

 eggs, 47 of which were on the tip of one leaf, overlapping both sides. 



August 13. No eggs in cage A hatched. 



Female No. 8, September 10. Owing to the fact that no niore moths 

 emerged in the insectary work was discontinued but on this date two 

 females emerged from the old tree in cage C and on August 12 one 

 of these, number eight, was transferred to cage A. The other was 

 held in reserve. 



September 12. One female placed in cage A. At 12 a visiting moth 

 was introduced into the cage and at 12.06 copulation took place^ 

 lasting an hour. 



September 13. Twenty-two eggs deposited by female. She after- 

 wards became entangled in a spider web and died. 



September 29. All eggs in cage A hatched between 6 p. m., August 28, 

 and 9.30 a. m., August 29. 



Summary 



In all cases, the males appeared only when the females exserted 

 their genitalia and it was notable that the former came to the cages 

 almost immediately following the protrusion of the ovipositor. 

 As far as could be ascertained, no sound was produced by the female. 

 In all cases except one, only the captured, visiting males copulated 

 with the females. In the exception noted, so many males were in the 

 cage that this point could not be determined. 



In copulating the females rested on the cage or leaves with genitalia 

 exserted ; the male hovered near, darting the tip of his abdomen toward 

 the female until finally able to clasp her genitalia. He then turned 

 with his head in the opposite direction to hers and settled on the same 

 object that supported the female. The shortest period of copulation 

 was fifty-one minutes; the longest eighty-one minutes and the average 

 sixty-five minutes and forty-five seconds. However, in one case the 



