36 REPORT OF SEARCH FOR ENEMIES OF CITRUS WHITE FLY. 
our material to this country is seen in Plate IX. The base measure- 
ment of the cases was approximately 2 J hy 3 J feet, while the height 
varied from 4 to 5 feet. Three large holes were made in both ends of 
the cases toward the top so as to allow a free exchange of air. These 
holes were covered with fine brass gauze to prevent the escape of 
insects. Two small doors were made in each case to be used when 
watering the plants. These doors were kept open in good weather 
during the voyage and a specially made fine wire-gauze screen placed 
in the opening. The glass portion of the case was divided into small 
sections, six on either side. Thick glass was deep set in the heavy 
frames so as to reduce to a minimum the possibility of breakage en 
route. 
A rack of half-inch boards rested on the bottom of the case, thus 
keeping the plant jars from coming in direct contact with the bottom. 
This helped to minimize the effect of sudden jolts as well as to allow 
seepage of excess water when the plants were watered. Several auger 
holes were bored in the bottom, of each case. The earthenware jars 
containing trees were tightly packed with a mixture of the fiber from 
palm trees and sphagnum moss. Strips of boards were tacked over the 
tops of the jars to keep them in place. The cases were made in sec- 
tions held together by screws. They could be easily taken apart and 
reassembled when needed. 
Cryptognatha flavescens, 1 the Predatory Enemy of the Citrus 
White Fly. 
During the autumn of 1910 a small reddish-colored lady-beetle was 
found destroying the white fly at Saharanpur, India, and two ship- 
ments of this species were made at that time to America. All insects 
were dead on their arrival. 
When the writer was carrying on an inspection of citrus trees in- 
fested by Aleyrodes, immediately following his return to Lahore in 
May, 1911, his attention was soon directed to a very few larvae of this 
coccinellid busily destroying the white fly. By May 9 the larvae had 
become fairly numerous on parts of the infested hedge about which 
work was centered. Very few adults were seen at this time. During 
the last ten days of May adults had become numerous, while larvae were 
seldom seen, which would indicate that the latter had reached 
maturity. Careful observations were made June 11 to 14 and the 
discovery was made that not only had all larvae disappeared, but the 
adults as well with the possible exception of an occasional straggler 
and these too disappeared during the latter part of the month. No 
Coccinellidae were seen during July, August, and September, but on 
October 5 one adult and a few young larvae were found on young 
1 This insect is mentioned in Indian Insects, by H. Maxwell-Lefroy, under the name CJanis soror, as 
attacking Aleyrodes sp. on castor (Riclnus sp.). 
