
othe 
survival in three types of soil was 25 per cent. Adult emergence of 
the earworm from hibernation cages began on May 28." 
Low-temperature tolerance of eggs of the range caterpillar para-— 
Sitized by Anastatus semiflavidus Gahan.--A. M. Barnes, of the Tempe, 
Ariz., laboratory, reports: "A series of experiments in which parasit- 
ized ee of Hemileuca oliviae Ckll. were refrigerated for approximately 
5 months at temperatures of 35°, 38°, 42°, and 46° F. has been completed. 
The parasitized Hemileuca oliviae eggs used in the refrigeration at each 
temperature were divided into three groups as follows: Eggs placed di- 
rectly in refrigerator when taken from parasite cages; eggs inoubated 
for 9 days at 80° F. before refrigeration; and eggs incubated for 18 
days at 80° F. before refrigeration--16,620 parasitized Hemileuca oliv— 
iae eggs were used in the tests. After refrigeration the parasitized 
eggs were incubated at 80° to 85° F. until emergence of parasites ceas— 
ed. The host eggs were then cleared and living parasites found therein 
were recorded. A study of the records secured may be briefly summarized 
as follows: Parasitized Hemileuca oliviae eggs taken directly from 
the parasite cages and placed in electric refrigerators at temperatures 
Bimoo°, 38°, 42°, and 46° F. for periods varying from 75 to''90 “days 
gave entirely negative results. No parasites survived. Parasitized 
eggs incubated 9 days before refrigeration and then refrigerated for 
periods of 77 to 90 days gave the following percentages of parasite 
Burvaval: «At 35°rF.,, 22:23 cperteents> atug8°° Fu, 57.43 per’ ‘cent; “at 
42° F,., 69.56 per cent; at 46° F., 71.88 per cent. This work is being 
continued using 6, 9, and 12 months as the time factor with 6, 9, 12, 
15, and 18 days preincubation period." 
COTTON INSECTS 
Field cricket studies at Tallulah, La.--J. W. Folsom and P. A. 
Woke, report that "Progress is being made in the study of the field 
cricket Grylius assimilis pennsylvanicus Burm. in relation to the cotton 
plant. Eleven females deposited a total of 3,327 eggs. Hatching began 
during the second week of May. About one-third of the nymphs are now 
second instars. Before May 15 all the adults that were seen were of the 
short-winged form. Since May 15 several of the long-winged form have 
appeared." 

Life history of tarnished plant bug in Louisiana.--K. P. Ewing 
and R. L. McGarr, Tallulah, report that "A total of 27 pairs of adults 
of Lygus pratensis L. have been confined during March, April, and May 
for life records. The average life of 23 females was 27.51 days, the 
maximum life being 62 days and the minimum 3 days. The average life 
of 18 males was 30.61 days, the maximum period being 59 days and the 
minimum 2 days. The life of both sexes was considerably longer in 
March and April than in May. Seventeen of the 23 females oviposited, 
with an average of 40.09 eggs per female. The maximum number of eggs 
deposited by a single female was 124. * * * The average nymphal per- 

