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penetration. This treatment has destroyed all ants and has given com- 
plete protection from reinvasion for a period of four to six weeks. ~ 
Schread ( 406 ): Schr«ad and Chapman ( 412 ). 
Lasius niger var . neonlger Emery 
Same as for L. nlger alienus americanus ,.— Schread and Chapman ( 412 ) . 
Monomorium minimum Buck! . . the little "black ant 
Tests at the Savannah laboratory of the Bureau of Entomology and 
Plant Quarantine have shown chlordane to he less effective than DDT as a 
residual treatment, although in actual practice it has "been reported to 
he highly effective in controlling ants in homes. — Knipling ( 265 ,). 
Pogonomyrmex hadius (Latr.), the Florida harvester ant 
Colonies in a typical Texas Gulf coast pasture in Florida were 
treated with a 5-percent chlordane dust. The treatments were made "by 
applying approximately one ounce of the dust over the mound around the 
entrance to the nest hy hand in such a manner that the ants leaving or 
entering the nest would have to pass through the insecticide. Each nest 
was treated five times during the test. At the end of 83 days no colonies 
had "been eradicated. — Riherd (390). 
A chlordane residue of 1.3 micrograms per square centimeter killed 30 
percent of the ants in 120 hours. — Metcalf (2Z1) • 
Pogonomyrmex barbatus var. mplefacians (Buckl.), the Texas harvester ant 
More than 300 colonies in pastures and yards in Oklahoma were destroyed 
hy pouring one cup (about 200 ml.) of 3-percent chlordane solution into the 
opening of each colony. Car Don tetrachloride and 95-percent alcohol were 
satisfactory solvents. Other diluents such as petroleum oils or water sus- 
pensions have since "been found to serve as well .--Brett and Ehoades (44). 
SolenoDsls geminata (F.) t the fire ant 
Same as for M. minimum . — Knipling ( 264 ) 
Soleno-psis saevissima var. rlchteri Forel, the imported fire ant 
In Mississippi in 1947 chlordane was effective in laboratory tests and 
in treating mounds in the field. A 5-percent chlordane dust was much mere 
effective than a 10-percent DDT dust. — Lyle and Fortune ( 304 ) . 
In Alabama the most effective treatment of individual ant hills was 
opening the mound and mixing insecticide with the soil in the mound. One- 
half pint of 2.5-percent chlordane emulsion spray or 2 ounces of 10 percent 
dust was highly effective when applied in this manner. Above 90 percent 
control of fire ants was obtained on area treatments when 2 or 4 pounds of 
chlordane as dusts or emulsion sprays was disked into the soil. Considerably 
