
Bap Shy od 
asitized. P. M. Gilmer, Tallulah, La., who has had a large series of 
Squares from different soil types and environments under observation, 
found a maximum of 5 percent parasitization and an average of only 1 per- 
cent parasitization in squares caged in July. At Tallulah all the para- 
Sites except two (unidentified) were Microbracon mellitor Say. Parasi- 
tism is correlated with heavy woods nearby and a good weed growth about 
the field edges. 
INSECTS AFFECTING MAN AND ANIMALS 
Diking a possible control for two species of sand flies.——"At 
Fort Pierce, Florida, a diking experiment is promising for control of 
larvae of Culicoides dovei Hall and C. melleus Cog. in a mangrove marsh," 
states W. E. Dove, Savannah, Ga, "From 6 weeks to 2 months after the in- 
undation with river water, small numbers of sand fly larvae were found 
along the edge of the water of the diked area. After that time larvae 
were not obtained in such collections of soil samples. Recently, and 
after a period of more than 4 months, the water level was allowed to 
drop for about 2 feet, to permit reconstruction and enlargement of the 
dam. Collections of soil samples from the new edge of the water failed 
to show any larvae, although collections from the ditches and elsewhere 
furnished numbers of them. We interpret results as promising for con- 
trol of breeding places of C. dovei and C. melleus, the most important 
sand flies of the mangrove marshes." 
Vorquito control gives relief to unemployed.—-W. V. King, Orlando, 
Fla., reports that "On July 20, at the request of the Director of Relief 
for Polk County, two areas in the county were inspected with a view to 
instituting mosquito control projects. At Haines City a marsh area of 
about 1,000 acres, bordering the city, appeared to be a potential source 
of prolific mosquito breeding. Several years ago this had been placed 
in a drainage district and a main canal with a few laterals had been dug. 
At the present time, however, the canals are in very poor condition as a 
result of heavy aquatic growths and the washing in of dirt. The clean- 
ing. of the canals, at an estimated cost of $5,000, and the cutting of ad- 
ditional laterals was recommended as a desirable project for the employ- 
ment of labor on the relief funds. At present 105 men per week are be- 
ing given employment in the district. A brief survey of conditions in 
the Fort Meade district showed two principal sources of mosquito breed- 
ing, one being numerous phosphate pits that have become overgrown with 
water hyacinth; the other, rather extensive marshy areas along Peace River 
and various branch streams. Several points in the district were reported 
to be quite malarious. While mosquito control work is evidently needed, 
no definite recommendations could be made without amore detailed survey, 
and this has been arranged for the early part of August. Some 70 to 80 
men per day are now being given employment under relief funds." 
Resistance of male and female house flies to kerosene-pyrethrum 
spray.-—Roy Melvin, Dallas and Menard, Tex., reports that "Tests were con-— 
