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oheck and 24 percent for the Geaarol A-3 dust.— Ross (306) • 
One application of Gesarol A-3 dust at the rate of 0.5 pound per 
100-foot row reduced the percentage of wormy carrots from 55 (in the 
cheok) to 12.— Morrison (266). 
Sepsidae 
Themira putris (L.) 
Samples containing l/l4 cubic foot of maggot-infested poultry 
droppings treated with 1-peroant solutions or suspensions of phenothia- 
*ine, TOT (Gesarol A-20), thiourea, and borax, yielded, respectively, 
26, 28, 83, and 89 adult flies, whereas the corresponding number for 
the cheok was 238. Solutions or suspensions containing 0.3, 1.0, and 
5.0 percent of the toxicants were used to treat similar samples of 
droppings. The average numbers of flies which emerged per sample from 
droppings treated with these three concentrations were as follows: 
Phenothiazine 23/ 5, and 5j DDT oil solution. 9, 3, 0; DDT water suspen- 
sion, 3, 30, and 19* Areas under turkey sun porches were treated with 
phenothiazine diluted It 5 with lime, and 1-peroent spray solutions or 
suspensions of borax, DDT (Gesarol A-20), and thiourea^ The average 
numbers of flies emerging per sample were 21, 18, 21, and 37, whereas 
87 emerged from the control*— Wolfenbarger et al« (379 ) . 
Simuliidae 
Simullum spp., blaok flies 
The abundance of blaok flies was notioeably reduced in plots 
sprayed with IDT •—Craighead and Brown (126 ) • 
Syrphidae 
Sphaerophoria oylindrioa (Say) 
In laboratory tests there were no survivors in any DDT-treated 
cages after 24 hours* The DDT (Gesarol A-20) was added to water at 
the rate of 0*8 pound in 100 gallons. The test plant was plum 
foliage infested with aphids*- Fluke and Pond (167 ). 
Unidentified species 
Syrphid flies, eggs, and larvae were extremely abundant and active 
on rosy apple aphid colonies on opening buds in an untreated plot but 
were not apparent in a DDT-treated plot.— Cleveland (114) • 
