272 
Dates of the appearance of the different stages at Olney and other 
points in 1916 are given in Table 35, immediately preceding. 
Olney is 75 miles, Plainview 108 miles, and Springfield 150 miles 
north of Ozark. The overwintering larve began to pupate at Ozark 
April 10, at Olney, Plainview, and Springfield April 13. The first moths 
emerged and the first eggs hatched on nearly the same dates at the four 
places. Larvz of the second generation began to hatch about 8 days 
later at Olney, 12 days later at Plainview, and 14 days later at Spring- 
field than at Ozark, and larve of the third generation began to hatch 7 
days later at Olney and 13 days later at Springfield than at Ozark. 
Three generations were recorded at all four points. The third genera- 
tion at Springfield was small as compared with the third generation at 
Olney. 
SEASONAL History OF THE CopLING-morTH, 1917 
The methods of work pursued during 1915 and 1916 were continued 
in 1917. The work at Olney was closed in July, so complete records 
were not kept of the second and third generations at that place. 
The season was not favorable for rapid development. While the 
mean temperature for April was about normal the temperature during 
the first half of the month was much below normal. May and June 
were cold months. The total accumulation of monthly degrees above 
50 for April, May, June, July, and August was 86.9, the normal being 
93.3. 
LARGE-CAGE SERIES 
First generation—The material collected from cages in 1916 was 
not preserved, hence no record of the pupation and emergence of hiber- 
nating material was secured from cages. Hibernating larve collected 
from bands in 1916 began to pupate April 3. Moths began to emerge 
May 17 and continued to emerge till June 24. The first moths to emerge 
were not liberated in a large cage because the dates when the first eggs, 
larvee, pupze, and adults of the first generation appeared could be easily ob- 
served without using a cage; but the last moths to emerge from the 
hibernating band material were liberated in a large screen-cage to get 
the dates when the last eggs, larvee, pupz, and adults of the first genera- 
tion appeared. 
The first eggs of the first generation were laid May 19 and hatched 
June 1. The first mature larve left the fruit June 23 and pupated June 
26, and the first moths emerged July 7. The last eggs of the first genera- 
tion were noted in the large cage June 27. They were probably laid two 
or three days earlier. They hatched July 1. Mature larve were found 
under the band on the tree in this cage from July 13 to August 13. No 
observations were made to ascertain the dates of the last pupe and adults. 
