54 
Riley states that the larvre of the first generation are most abundant 
about Jul}" 8; Gillette, that this occurs in Grand Junction about July 
15, at Denver July 21, and at Fort Collins Juh^ 25. 
MOTHS OF THE FIRST GENERATION. 
Card found the first moths of this generation about July 2. Cord- 
ley gives August 1 as the date for the first and September 15 for the 
last. Gillette gives the following data: Grand Junction, Colo., first 
Juh^ 28, last September 12; Can3"on City, first Juh^ 15, last Septem- 
ber 10; Fort Collins, first Juh^ 13, last September 12. According to 
Gillette, the eggs of the first generation were most abundant August 
12. In 1901 the writer found eggs most abundant between July 15 
and August 4. In 1902 the}^ were most abundant about the same time, 
but were obtained in cages as late as August 29. The dates of the 
maxima of this generation of the larvfe going under bands is well 
shown in Table VI for the second generation. An examination of these 
band records as published shows that the period of the larvie leaving 
the fruit and entering the bands extends over two mouths. 
HIBERNATION. 
The following table by Gillette shows the time at which pupation 
ceased and the larvae began to hibernate at various places in Colorado. 
It was found, as shown b}^ the table, that pupation ceased between 
August 10 and August 30, var^dng with the localit}' in wliich the 
experiments were made. 
Table VII. — Proportion of Idhcrnating larvx taken at diferent dates. 
Locality. 
Dates larvfc Avere taken. 
Number 
taken. 
Number 
hibernat- 
ing. 
Record ])y— 
Grand Junctiou Colo 
July lG-23 1900 
33 
53 
60 
1 
3 
8 
Silmon Smitb 
Do 
Julv 24-30, 1900 
Do. 
Do 
July 31-Aug. 6, 19U0 
Do. 
Do.... 
Aug. 6-13, 1900 
Do. 
Do. 
Aug. 13-20, 1900 
79 
130 
192 
22 
14 
51 
66 
115 
80 
25 
70 
50 
100 
78 
130 
192 
5 
4 
14 
56 
115 
80 

30 
44 
99 
Do. 
Do 
Aiig. 21-29, 1900 
Do. 
Do 
Aug. 30-Sept. 4, 1900 
Do. 
Rockvford Colo 
Aug. 1-6 1900 
H.H. Griffin. 
Do 
Aug. 7-11 1900 
Do. 
Do 
Aug l''-14 1900 
Do 
Do 
Aug. 15-21, 1900 
Do. 
Do 
Aug. 22-28, 1900 
Do. 
Do 
Aug. 29-Sept. 0, 1900 
Do. 
July 30,1899 
Dr. R. J.Peare. 
bo ". 
Aug. 1-13. 1899 
Do. 
Do. 
Aug. 14-20, 1899 
Do. 
Do 
Aug. 21-28, 1899 
Do. 
Cordley has for several years been unable to breed any moths after 
September 15. In 1900 the writer found that pupation had ceased 
September 1, and in 1901 September T. In 1902 more extensive breed- 
ing experiments were carried out, from which it was found that pupa- 
tion began to grow less about August 1 and entirely ceased August 
22, and that no moths emerged after September 17. 
