
ae ae 
of production (12,257,000) in July; in 1933 a total of 104,710,000, with 
the greatest number (25,516,000) in March, followed closely by April and 
May. Their report as to the results of the liberation of these parasites, 
however, is much less encouraging. After a discussion of factors that 
Might have affected the results, these workers have reached the conclu-— 
Sion "that the data obtained, while showing some experimental variation, 
are reliable and indicate that no control was obtained this season on 
the nut case bearer with Trichogramma." 
Control of pecan nut case bearer by the use of lead arsenate.— 
C. B, Nickels, Brownwood, Tex., has submitted a preliminary report indi- 
cating the possibility of controlling Acrobasis caryae by the use of 
lead arsenate. Two applications were made of lead arsenate, 3 pounds to 
50 gallons, against the first brood of this insect in each of three ex-— 
periments. No foliage injury occurred in these tests, which were conduct-— 
ed under semiarid conditions. Preliminary counts showed that the per-— 
centages of clusters infested in the three tests were as follows: Sprayed, 
145, 0.55, and 7.40; unsprayed, 33.73, 13.98, and 41.35. 
JAPANESE BEETLE AND ASIATIC BEETLE RESEARCH 
Dosage of lead arsenate for control of Jap beetle larvae in 
soil.-—-M. R. Osburn, Moorestown, N. J., reports that "The larval sur-— 
vey of the turf treatments with lead arsenate, applied in 1929, showed 
about 50 percent reduction in those receiving 10 pounds to 1,000 square 
feet, 86 percent reduction in those receiving 20 pounds to 1,000 square 
feet, and 96 percent or greater with the higher concentrations (30 
pounds or more). In the top-dressing plots treated in 1932 the appli- 
Cation of 5 pounds to 1,000 square feet reduced the light infestation 95 
percent," 
Present status of the introduced parasite Tiphia vernalis.—-Sum- 
marizing the results of work on the spring emergence of the Tiphia para-— 
Site of the Jap beetle, G. W. Balock, Moorestown, reports that of the 
colonies 2 years old or older, 19 out of 29 were recovered. The natural 
parasitization in the field ranged from 7 to 14 percent; 6,918 females 
were taken in local collections; 65 colonies were established with females 
collected locally, and 41 colonies were established from foreign importa— 
tions, making the season's total 106 colonies; and 10,2357 living females 
were imported, the mortality being 17.4 percent. 
TRUCK CROP AND GARDEN INSECTS 
Injury to beans by nicotine sulphate described.—-Reporting on 
insecticidal treatments against the Mexican bean beetle (Epilachna 
corrupta Muis.), L. W. Brannon, Norfolk, Va., says, "for the first time 
