-147- 
There appeared to be no appreciable mortality of syrphid larvae 
on aphid-infested cucumbers thoroughly sprayed with 16 ounces of DDT 
per 100 imperial gallons of water in powder suspension or Velsicol 
emulsion.— Ross (306 ) . 
Tabanidae 
Chrysops flavida Wied. 
Same as for Tab anus abactor • •— Okl a • Agr. Expt. Sta. ( 278 ) • 
Chrysops spp., deer flies 
The abundance of deer flies was noticeably reduced in a number of 
plots sprayed with DDT •--Craighead and Brown (125 ) . 
See Misoa domestica .— Dove (137 ) • 
Pangonla inolsa Wied. (g Esenbeckia incisuralis (Say)) 
Seme as for Tabanus abactor *— Okla. Agr. Expt. Sta. (278) • 
Tabanus abactor Philip 
JT. equal is Hine 
Aqueous sprays containing 5 percent of DDT applied to cattle gave 
repellency while wet. The flies began to die in 12 to 18 hours after 
feeding but much of the spray* a effectiveness was lost after 24 hours. 
Definite conclusions were not made due to high mortality in the checks. 
— Okla. Agr. Expt. Sta. (278 ) . 
See Musca domestioa .— Dove (137) • 
Tachinidae 
Spilographa electa (g Zonosemata electa (Say)), pepper maggot 
A 3-percent DDT dust and a spray containing 1 pound of DDT in 100 
gallons of water were applied to peppers four times at weekly intervals 
after the first egg punotures were noted. The spray gave a reduction of 
45 peroent in infested peppers and the dust gave 25 percent reduction. 
Adult 8 were noted walking over the insecticide deposit, but no dead 
flies were found in the plots.— N. J. Agr. Expt. Sta. (275). 
