Hungerford: The Toad Bug. 



153 



This pair of bii^s was observed mating May 15, 17, 18, 19, 20, 21, 

 22, 24, 27, June 2, 7, 22, and July 6. No count of eggs laid was 

 attempted, but 22 eggs, 160 first-instar and 10 second-instar nymphs 

 were taken, a total progeny of 192, with egg-lay noted from July 1 

 to last of August — this the performance of a female that spent the 

 preceding winter in the laboratory. 



° indicates "died" in this and following tables. 



SECOND PAIR— OFFSPRING IN FOUR SERIES. 

 Rearing Number 1, Series m. 

 On July 6, Mrs. Wiley brought me 7 bugs from Chanute, which 

 she had captured July 3. One pair, observed mating, I placed in a 

 small stender on sand with a sprig of moss. July 8, quite a number 

 of eggs were in the sand, so the adults were removed to another 

 stender. On July 15, the eggs showed pink eyespots of the embryo 

 within; and on July 19, 8 hatched and were isolated for rearing. 

 July 21, 5 more hatched; and July 24, 3 more. Thus at least 16 

 eggs were laid by this female in two days, and the incubation period 

 was 12 or 13 days. The rearing table marked Im series is a record 

 of fifteen of these nymphs. 



