26 THK CHINCH BUG. 
broods annually of the chinch bug. That this insect may be able to 
adapi itself still further to changed latitude and environments and 
become single brooded is not at all impossible. As illustrating the 
ease with which insects, at Leasl some of them, can change their 
habits to correspond with their environment, we have in South Aus- 
tralia the following fact- regarding the codling moth. ( f arpoca psa 
pomonella L., of which, though being -till double brooded, "the 
winter caterpillars hatch into moth- irregularly from the beginning 
of October until the middle of November and deposit their eggs 
accordingly, giving rise to a succession of young caterpillar- until 
the beginning of December. About the third week in December the 
firsl moth- of the second brood begin to appear and deposit coo-, and 
members of this second generation of moth- continue hatching and 
effg la vino- until the end of February." 
The author'- note- on the chinch bug in northeastern Ohio are 
as follow-: Very young Larvae, with what appeared to be their pro- 
genitor-, were observed at Jefferson, Ashtabula County, within 11 
mile- of the shores of Lake Erie, June 16, 1803. there being no 
advanced larva 1 among them. On August 27, 1896, a few miles 
south, at West Andover, in the same county, only adult- were 
observed in two days' search, though some of these showed by their 
color that they had but recently passed the pupal stage. In this 
latter locality. May 7. 1897. the sexes were pairing, but no young 
were present so far as could be observed, while to the south and we-t 
of this locality. June 8 and 9, precisely the same condition- obtained 
as to the bugs, no young appearing at this time. Quite copious rain- 
might have destroyed the young, but within 15 miles of these locali- 
ties, on- July 14 of this year, larvae were found after first molt and 
stages intervening between these and the adults. Near Youmr-town. 
on October 3, 1897, only adult- were present, pairing was not in prog- 
ress, and the insect w a- not pairing in Ashtabula County on August 
l ; 7. L896. June 9, 1808, only two very voting larvae could be found 
at Salem, about 15 mile- southwest of Youngstown. 
[Jp to October 17. 1898, no young of a second brood had been 
observed, though careful search had been made from time to time in 
the fields and meadows of northeastern Ohio, and a large number of 
adult- which developed in July and August, and since kept in con- 
finement, had not only not reproduced, but had shown no disposition 
whatever to pair. On the other hand, in southwestern Ohio, in the 
vicinity of Cincinnati, on September 24, where the species occurred 
in abundance, fully 7.~> per cent were pupa 1 , the remainder being made 
up of larva?, some id' them quite young, and adults in about equal 
rge Quinn, in Journal of Agriculture and Industry. South Australia, Vol. 
I. p. 112. 
