
UGE a 
CEREAL AND FORAGE INSECT INVESTIGATIONS 
W. H. Larrimer, in Charge 
Dr. L. 0. Howard visited the New Orleans laboratory on March 9S. He 
was especially interested in three species of parasites sent from Argen-— 
tina by H. A. Jaynes, who is collecting parasites in South American coun- 
tries for trial against the sugar cane moth borer in the United States. 
Dr. Charles H. Richardson, of the Department of Entomology, Iowa 
Agricultural College, at Ames, visited the field laboratory at Webster 
Groves March 6. Dr. Richardson is conducting research and teaching in 
insect physiology, and was returning from a conference with Prof. Dean, 
Dr. O'Kane, Prof. Flint, and others, under the auspices of the Crop Pro- 
tection Institute, at a chemical manufacturing plant near St. Louis, Mo. 
Importations of parasites of the European corn borer have progressed 
satisfactorily in the recent winter. The actual cost per parasite has 
been much lower than in any previous year, and the parasites are in good 
condition. Four species which pass the winter in the cocoon total 110, 
742 in number. The corn—borer larvae shipped this winter from France nun- 
ber 1,244,900, and 122,069 have been received from Japan. From these will 
be reared at least ten other species of parasites which pass the winter 
inside the living borers. 
A. B. Baird, in charge of parasite work in Canada, visited the 
field laboratory at Arlington, Mass., on March 14 and lo. 
Dr. D. M. DeLong conferred with Dr. F. W. Poos in March regarding 
the species of the genus Empoasca that may be responsible for causing 
alfalfa yellows, and similar injury to legumes other than alfalfa. Some 
very interesting taxonomic angles to the whole problem of alfalfa yellows 
were developed, emphasizing the value of taxonomic work in economic ento— 
nology. 
Roy E. Campbell, of the field laboratory at Alhambra, Calif., vis- 
ited the field laboratory at Tempe, Ariz., on March 26. 
D. W. Jones, in charge of the field laboratory at Arlington, Mass., 
and Dr. C. H. Batchelder, in charge of the chemotropic and insecticide 
work there, recently conferred with Prof. W. C. O'Kane, of the University 
of New Hampshire, at Durham, N. H. Since these persons are already in 
very close contact with the Boyce-Thompson Institute, with Dr. R. C. 
Roark, of the Insecticide Division, Bureau of Chemistry and Soils, and 
with Dr. G. H. Adams, of the Bureau of Chemistry and Soils, who is sta- 
tioned at Boston, very valuable cooperation in the campaign against the 
European corn borer is being. secured. 
err TS TT IS 
Mr. Hisashi Nishikawa, of the Agricultural Experimental Station, 
The Government-General of Chosen, Suigen, Chosen, Japan, visited the 
Bureau of Entomology March 20. Mr. Nishikawa is interested in seri- 
culture. 
