me alee 
the purpose of presenting to him the relation between this slough and 
Several inlets to large lakes on St. John's Peninsula which cause a 
great deal of mosquito breeding when flooded. It was our idea that these 
inlets could be filled by hand labor furnished by the Civic Emergency 
Commission, and flood gates installed to prevent the flooding of several 
acres of land which produce mosquitoes in season in countless numbers. 
This boat trip was supplemented by a short airplane survey to give a 
quick and more apprehensive idea of the immense amount of ground invol— 
ved and its relation to the slough. No definite promise has been made 
that these inlets will be filled, but it is believed that $15,000 
will be appropriated for this purpose after the brush cutting has been 
completed." 
COTTON INSECTS 
T. C. Barber, Calexico, Calif., reporting on the life history of 
the cotton leaf perforator (Bucculatrix thurberiella Busck) says: "From 
the results of the observations made last winter, combined with the re— 
sults obtained to date for the present fall, it is evident that under 
lower Rio Grande Valley conditions life-history development of the cot-— 
ton perforator is very slow, but practically continuous through the 
winter, being checked only during unusually cold periods. These condi- 
tions are materially different from those obtaining in southern Califor— 
nia, where the life-history development is practically stopped by the 
first killing frost, usually during the latter half of November, and is 
not resumed until the temperatures again moderate in the spring." 
Pectino phora gossypiella Saund.) at El 
Paso, Tex., and state: "During November it was found that the average 
number of eggs laid by fertile female moths of the fifth generation was 
50.7 and the maximum 160. The average longevity for males and females 
vas 11.7 and 11.4 days, respectively. The maximum longevity recorded for 
both males and females was 19 days. The average duration of the ovipo— 
Sition period was 5.7 days and the maximum was 14 days. The average 
duration of the preoviposition period was 2.5 days and the maximum was 
8 days. The last date of Oviposition recorded was November 19, a kill-—- 
ing frost having occurred on the 15th. * * * During this period (Novem— 
ber), the average duration of the pupal stage was 21 days. An occasional 
pupation and moth emergence was recorded for the fourth generation in 
bolls, as most of the larvae went into the long-cycle phase. In one 
case the duration of the pupal Stage was approximately 40 days. The 
fifth generation in squares was completed early in the month, no larvae 
entering the long-cycle stage. On the other hand, all larvae of the 
fifth generation in bolls were of the long-cycle type. This phenomenon 
has been noted with other late-broods and it appears that there is some— 
thing present in the immature seeds in the bolls that causes the larvae 
to enter the long-cycle stage rather than to pupate. Many larvae of the 

