1963] 
Bailey — Tingidae 
213 
in an open spot. The daytime high was a bit lower because of the 
shade and the night low somewhat higher because of the sheltering 
trees and buildings. Nevertheless, they are satisfactorily representa- 
tive for the area and agreed reasonably well with those broadcast on 
the local weather reports. 
The Victor rain gauge was mounted according to directions in an 
open area about 5' high on a 4x4 post facing about due north. 
During both 1958 and i960, the precipitation in the summer months 
was adequate and distributed sufficiently for the maintenance of 
plant growth. The gauge is evidently accurate since my readings on 
several occasions agreed with those announced by our local radio 
weatherman. The gauge was set up for operation on May 20, 1958. 
From then on daily records were kept throughout the two seasons 
without interruption. However, from August 14 to September 19, 
1958 the aluminum cup that catches the rain disappeared and 37 days 
elapsed before another could be obtained. Therefore, the amount of 
rain collected during this interval was appreciably less due to the 
smaller diameter of the tube. Nevertheless, it was possible to com- 
pute approximate amounts for this period since I could compare the 
amount the gauge took without the catch cup with the amount 
reported locally for particular storms. This proved to be two-fifths 
on the few occasions checked and is considered sufficiently correct 
for this purpose. 
The bar graphs in Figures I and II represent the total rainfall 
plotted on a weekly basis for the two seasons indicated. Maximum 
and minimum daily temperatures were averaged and also plotted 
on a weekly basis to give the temperature ranges shown in the same 
figures. 
For ease of comparison, the same collecting technique described 
for population studies of Corytkucha cydoniae (Fitch) and C. pruni 
O. & D. was again employed (Bailey, 1951, p. 78). This involved 
the use of small vials ... 45 mm. deep and 10 mm. in diameter at 
the top opening . . . with plastic caps. Each vial was partially filled 
with alcohol and could be easily held against the leaf of the host 
pi ant while the lace bugs were flicked into it with a finger tip. Col- 
lecting time was limited to five minutes and labels with pertinent 
data were enclosed with each collection as it was made. Some of the 
Explanation of Figures I and II 
The bar graphs represent total weekly rainfall in inches with the seasonal 
distribution indicated below. The curves above show maximum and minimum 
daily temperatures averaged and plotted on the same weekly basis for the 
period of lace bug activity during 1958 and 1960 respectively. 
