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the imported pine sawfly 1 l/2 pints of xylene were substituted for the 
1 pint of cyclohexanone and the solution seemed perfectly satisfactory* 
— Dowden _et al • (136) • 
Complete control of the red-headed pine sawfly in a red pine plan- 
tation in northern Hew York was obtained by applying 2 1/2 pounds of DDT 
per acre. On the fringes of this sprayed area, where the spray drifted, 
complete control was obtained with a dosage believed to be not more than 
1 pound of DDT in 1 gallon of liquid per acre*-- Craighead and Brown ( 125 ) • 
Trichogrammatldae 
Tricho gramma ep. 
See Diatraea saccharalis .— - Ingram et al* ( 222 ) . 
Vespidae 
Vespula arenaria F* 
A small quantity of Gesarol A-3 dust (3 percent DDT) was applied 
with an insecticide puffer to the exit holes of two active wasps' nests 
under the eaves of two neighboring garages at Westboro, Ont* No wasps 
were seen around the nest the next day and none issued from the nests 
when disturbed* The nests were cut down on the second day and found to 
oontain numerous living larvae and pupae and a few adults which were 
unable to fly* The wasps had apparently got the dust on their bodies 
while passing in and out of the nests and most of them after leaving had 
been unable to return.— Ross (306) • 
Unidentified wasps 
See Apli mell if era .— Bromley (96). 
DIPTERA 
inthomyiidae 
Fannla oanioularls (L*), the little housefly 
Same as for Musca domestics . ■— Ross ( 306 ) • 
Hylemya antiqua (Mg.), the onion maggot 
Gesapon No. 18, 1 gallon (approx. 8 oz. of DDT) per 100 imperial 
gallons of water was applied to seedling onions at the rate of 1 gallon 
per 120 feet of row. One series of plots vras treated on May 30, and a 
seoond series on May 30 and June 2. Results to June 30 were as follows: 
One application, 21 seedlings dead, 251 living, seedling mortality 8.3 
percent; two applications, 46 dead, 290 living, mortality 15.3 percent; 
