

iB 
Leona E. Anderson, of Ridgway, Pa., called recently to obtain 
identification of a collection of ectoparasites from Pennsylvania. 
On June 19 Dr. Norma LeVeque, of the Department of Biology, Uni- 
versity of Colorado, at Boulder, Colo., came to Washington while on her 
way to Europe and discussed the insect—infesting mites. She has been 
working particularly on the gamasid mites which infest carpenter bees 
(family Xylocopidae) and examined the collection of this family in the 
National Museum. 
Herman Schroeder, of the Bureau's Division of Insects Affecting Man 
and Animals, located at the field laboratory at Charleston, S. C., was in 
the taxonomic unit recently to examine the collection of ticks te their 
hymenopterous parasites (family Chalcididae) . 
H. K. Plank, of the technical staff of the Tropical Plant Research 
Foundation, Central Baragua, Baragua, Camaguey Province, Cuba, left for 
identification a number of specimens of insects which had been ages 
in Cuba in connection with economic investigations on sugarcane insects in 
that island and consulted the Bureau's specialists. 
Homer C. Will, of the Carnegie Institute, Pittsburgh, Pa., spent 
June 25 to 25 in the section of Hymenoptera examining the collection of 
North American Tenthredininae. He is especially interested in compiling 
a list of the sawflies of this subfamily occurring in Pennsylvania. 
J. H. Roberts, of the University of Maryland, called recently to 
discuss with the Bureau's specialists a survey of the ticks of certain 
parts of Maryland. 
Prof. A. L. Melander, of the College of the City of New York and a 
well—known specialist on the Diptera, has been spending the past few days 
in the Division of Insects examining the collection of Diptera. 
David G. Hall, of the Bureau of Entomology, stationed at Charleston, 
S. C., spent two weeks examining type material in Diptera. 
DECIDUOUS-FRUIT INSECTS 
Dr. F. R. Petherbridge, Entomologist of Cambridge, England, visit— 
ed the Wenatchee, Wash., sublaboratory on May 9 and ll. 
E. V. Shear, Plant Pathologist of the Bureau of Plant Industry lab- 
oratory at Hood River, Oreg., visited the Wenatchee, Wash., sublaboratory 
on June 9 to 12, conferring with M. A. Yothers upon their common problen, 
the relation of the woolly aphis to perennial canker of the apple. 
