= oie 
by means of the gin trash machine and which was recorded under all con— 
ditions studied was caused by injury from the collecting machine." 
Life history of pink bollworm in squares and bolls.—-Messrs,.Cal- 
houn and Fife describe an experiment started in May, 1931, and completed 
in November, 1951, "to determine the number and time of appearance 
of the different generations of the pink bollworm and, in addition, 
the comparative duration, in both squares and bolls, of the different 
stages of the life cycle for each generation." A tabulation of results 
Shows that "(1) At Presidio, Tex., in 1931, there were six generations 
of the pink bollmorm in squares but only three and a partial fourth in 
bolls; (2) the duration of the developmental pericd in bolls was 6.4 
days longer than in squares and the larger portion of this difference oc— 
curred during the larval period; (3) males required a slightly longer 
period for development than females. The longer period necessary for 
development of the pupae of the males accounted for the greater parv cog 
this difference; (4) temperature dces not entirely govern the rate of 
development; (5) in the field there is a continuous Overlapping of 
generations after the first generation in squares, owing to Celayed emer— 
gence of long-cycle moths, to differences in the rate of development in 
' squares and bolls, and to other factors." 
Emergence of cotton flea hopper.—-K. P. Ewing and R. L. McGarr, 
Tallulah, report that "The first live specimen of Psallus seriatus Reut. 
for this season was found on March 1, in an emergence cage. To date 
(April 1) no live nymphs have been found in the field." 
Tarnished plant bug gets early start.--Messrs. Ewing and McGarr 
also report that "Adults of Lygus pratensis L. have been observed to 
be active on various plants, especially alfalfa, throughout the winter. 
The first nymphs of the season were observed on March 16. However, 
some of the nymphs found on this date were third and fourth instars, in- 
dicating that they were hatched at least 10 days previously. This 
shows that overwintered females of Lygus pratensis started laying eggs 
during the latter part of February." In "1,500 sweeps with a hand net 
made from February 29 to March 26 on alfalfa ana oats * * * L. praten— 
Sis was the only mirid collected." The numbers taken on alfalfa for 
weekly intervals (excluding March 7 to 12) were 39.8, 33.7, and .joeee 
on oats the number for each corresponding period was 1.0. 
Boll weevil movements.--Collections of boll weevils from the 26 
Screen traps located in eight cotton fields and two pastures in Madison 
Parish, La., are reported by G. L. Smith, J. C. Clark, and A. L. scales, 
as follows: "In January 207 weevils were collected, in February 175, 
and £25 in March. * * * The peaks of weevil movements always occurred 
following two or three days with maximum temperatures around 80° F. 
and sunshine. * * * The movement of weevils was very light from March 5 
to 18, at which time the lowest temperatures for the winter occurred. 
However, 11 weevils were collected during this period when the minimum 
temperature was never higher than 35°F. An interesting feature in the 
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