8 PSYCHE [February 



rather hazardous, however, to say even that, in the absence of extensive data, but 

 analogy would lead me to believe that the number of eggs deposited, for instance, is 

 much greater than the maximum here recorded, and so on for the other points in- 

 volved. But reasoning by analogy is untrustworthy in these cases, and the records 

 must stand for themselves. 



Table V. Gravid females in confinement. 



Note: a. and p. mean A. M. and P. M. respectively. 



The adults of the reared generation, issuing at the average time of 7 P. M., 

 July 20th, were confined together with food, and did not commence to mate until 

 July 25th, feeding during the interval. At emergence, the two sexes are similar in 

 appearance, but after mating the females become greatly swollen about the abdomen, 

 giving them a characteristic appearance. 



Two pairs were observed mating, presumably for the first time, on July 25th, 

 and they were confined separately. The female of one pair deposited 211 eggs, 

 from July 26-29, dying on August 3 without further deposition. The female of the 

 other pair laid 412 eggs, from July 26 to August 5, dying on August 9. Many of 

 the eggs deposited by these pairs failed to hatch. In nature the adults feed exten- 

 sively on the foliage. 



