Rau — Sexual Selection ExpenTnents in Cecropia Moth. 295 



Whether the male mated with this female on account 

 of, or in spite of the fact that she had already oviposited 

 is not known. 



Experiment 32.— May 29, 8:00 P. M. 



(^134. Age day 4:40 hours. 



9 128. Left off mating one hour previously. 



Object, — To see whether an already fertilized female 

 will remate if the male be young. 



Results. — May 30, 6:00 A. M. The pair found in copulo. 



This is the first and only instance of a female mating 

 with more than one male. 



Experiment 33.— May 31, 10 :00 P. M. 



(5'138. Age 1 day 6:00 hours. 

 c?139. Age day 8:00 hours. 

 $ 140. Age day 7:50 hours. 



Object. — To see whether the female will mate with the 

 younger or older male. 



Results. — June 1, 6:00 A. M. The female found in copulo with 

 male 138, the older of the two. 



Experiment 34.— June 2, 8:00 P. M. 



(^138. Age 3 days 4:00 hours. Already mated. 

 (^141. Age 1 day 4:50 hours. 



$ 140. Age 2 days 5:50 hours. Previously mated with male 

 138, having severed only a few minutes before. 



Object. — To see if an already mated young female, 

 which has just severed, will mate again, and if so, whether 

 her preference will he for her former mate or for a 

 younger, unmated male. 



Results.— <fxme 6, 9:00 P. M. They have been kept together for four 

 days without mating. 



Experiment 35. — June 5, 9 :00 P. M. 



<J139. Age 5 days 7:00 hours. 



c^l48. Age 1 day 3:40 hours. Antennae removed. 



$ 144. Age 1 day 5:15 hours. 



