LIFE HISTORY AND HABITS: THE ADULT. 95 
The Douglas, Mich., records, as pointed out for the larval emer- 
gence data, are manifestly incomplete, especially as regards the latter 
part of the season. They do, however, show the emergence of 
beetles from all larve from peaches regularly collected throughout 
the season, as previously shown. ‘The interval here is only 23 days, 
from August 1 to 23. 
Incomplete records from Youngstown, N. Y., give for the earliest 
beetles July 18 and the latest October 6, a period of 80 days. 
At North East, Pa., the first emergence was noted July 15, and 
beetles were reared in confinement up to August 21, and unques- 
tionably appeared much later. The period observed, however, is 
37 days. 
In Illinois, as stated by Prof. Crandali, earliest beetles were reared 
July 17, and continued to emerge until November 7, a period of 113 
days. His observations were made on apple, on which fruit the 
insect would have opportunity for late ege laying, which would not 
be true in the case of peaches and plums in the South. Unquestion- 
ably the Illinois records more nearly show the period of emergence 
for the Northern States where suitable fruit is not at ary time 
wanting. The above data are shown below in tabular form. 
Period of emergence of beetles. 
Days. 
pense Wee eo to NOM Os. = oak a Seo Bee et he cen he SE's: Lk 
Aaa Mem llptO.OGi a Agent ets sioke eis so ea ees bee es ak 134 
Visiriec on Columbia—Inmew'5! to Aug? 30. 6.2 22.52.2220 2 eee 76 
Micharan—vne® tito: Amer 23s 2 Us fk oe ek eet ols Lee a 
Newel for ek JiullvaliS ton@ cen Geert eee Sar se wire ey eee Re 80 
Pilon bul eA (tO INOW g2n2 522 e2 pea Sees toe doa d= eb Sas cn depos 113 
PROPORTION OF SEXES. 
The proportion of males and females was determined at different 
times, with overwintering and newly emerged adults. 
In a lot of 80 beetles reared in confinement at Washington during 
June, 1905, 30 were males and 50 females. In another lot reared as 
above, 21 were males and 45 females. Of 140 adults jarred from 
trees in May, 1905, at Arundel, Md., and hence overwintering beetles, 
70 were males and 70 femaies. 
At Myrtle, Ga., in 1906, of 200 beetles jarred from trees May 14 to 
21, 83 were males and 117 females, and of those taken May 22 to 30, 
73 were males and 107 females, a total of 180. One hundred beetles 
reared from various fruits during May and June gave 51 males and 
49 females. In a lot of 175 beetles reared from May 28 to August 
12, 81 were males and 93 females. In a lot of 840 beetles jarred 
from peach at Fort Valley, Ga., in 1905, 339 were males and 501 
females, 
