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TAXONOMIC INVESTIGATIONS 
Harold Morrison, in Charge 
On June 8 Vladimir W. Alpatov, of the University of Moscow, Russia, 
now a student at Johns Hopkins University, visited the National Museum to 
examine the National Collection of Apis. Accompanying him was Th. Dolzhaasky 
of the University of Leningrad, Russia, now studying at the California 
Institute of Technology, at Pasadena, who was interested in seeing the col- 
lections of Coccinellidae, especially the North American material of the 
genus Coccinella in the Casey collection. 
Andre Seyrig, of Paris, France, a mining engineer and amateur spe— 
cialist on Ichneumonidae, spent June 11 discussing these insects with R. A. 
Cushman. He brought as a gift to Mr. Cushman a collection of about 150 
specimens of European Ichneumonidae, including cotypes of three of his own 
species. 
J. A. G. Rehn, of the Philadelphia Academy of Natural Sciences, 
visited the Taxonomic Unit June 13 to confer with A. N. Caudell. 
On June 12 G. J. Haeussler, of the field laboratory for the study 
of peach insects, at Moorestown, N. J., called at the National Museum to 
consult Bureau specialists about hymenopterous parasites of the oriental 
peach moth. He was on his way to the field laboratory at Hyéres, Var, 
France, maintained for the study of parasites of Buropean insect pests in— 
troduced into the United States. 
On June 14 Dr. D. D. Hendrickson, a physician of Middletown, N. J., 
and Winterhaven, Fla., discussed the Mediterranean fruit fly with C. T. 
Greene, dipterist in this unit. 
Prof. M. A. Stewart, of Rice Institute, Houston, Tex., spent June 
14 and 15 in the National Museum studying certain types of Siphonaptera, as 
@ Step in his work of preparing a revision of the North American species. 
On June 17 Dr. Ruth Marshall, Professor of Biology, Rockford Col- 
lege, Rockford, Iil., called at the Museum to examine types of water mites, 
She was on her way to Europe, where she will spend the summer in study. 
Carl Heinrich, of the Taxonomic Unit, returned June 19 from a trip 
to Guatemala and Honduras, where he went to investigate the reported oc— 
currence of the European corn borer. 
Dr. B. A. Chapin visited the Brooklyn Museum, Brooklyn, N. Y., June 
27 and examined the collection of beetles there. He spent June 28 at the 
American Museum of Natural History in New York City, where he also examined 
beetles, particularly the Scarabaeidae from the West Indies. 
