ny EEN 
TAXONOMIC INVESTIGATIONS 
Harold Morrison, In Charge 
C. F. W. Muesebeck, of the Gipsy Moth Laboratory, Melrose High- 
lands, Mass., spent December 10 to 16 in Washington, studying material 
relating to his work on hymenopterous parasites. He also examined some 
genotypes of the family Braconidae. 
A. F. Satterthwait, of the field laboratory at Webster Groves, 
Mo., came to Washington early in December to discuss some of his prob- 
lems with the taxonomy specialists of the Bureau and to secure identifica- 
tions of material. 
Frank Haimbach, of the Philadelphia Academy of Natural Sciences, 
visited the Museum in December to study the collection of Pyralidae and 
other Lepidoptera. 
Dr. Audrey Avinoff, Director of the Carnegie Museum at Pittsburgh, 
recently called at the Division of Insects to consult with Dr. Schaus 
ard other Bureau lepidopterists. 
Prof. Paul B. Lawson, of the University of Kansas, at Lawrence, 
stopped in Washington on his way to the meetings in New York City, to 
study Homoptera in the collection here. 
Dr. C. J. Drake, of Iowa State College, Ames, spent parts of De- 
cember 24 and 25 working in the National Collection of Heteroptera. 
H. S. Barber, A. G. Béving, H. E. Ewing, and Harold Morrison, of 
the taxonomic unit, attended the recent meetings of the American As- 
sociation for the Advancement of Science in New York City. 
Prof. James S. Hine, of the Ohio State University, at Columbus, 
visited the Museum on December 26 and again on December 31, looking 
up matters relating to his studies on the dipterous family Tabanidae, 
and other problems. 
Professors R. H. Beamer and H. B. Hungerford, of the University of 
Kansas, at Lawrence, spent December 31 in the Division of Insects con- 
sulting with the Bureau specialists and examining material in the col- 
lection of Heteroptera. 
E. Rivnay, of Johns Hopkins University, Baltimore, Md., called 
at the Museum December 31 to examine specimens of the beetle family 
Rhipiphoridae, a revision of the North American species of which h3 
has now virtually completed. 
Frederick Muir called on some of the workers in the taxonomic unit 
on December 3 and 4. 
