
= 3 e 
Dettmar WV. Jones, of the Arlington, Mass., laboratory, visited 
the Chatham, Ontario, laboratory early in April, to confer with A. B. 
Baird, of the Dominion Department of Agriculture, relative to the tech- 
nigue of handling parasites of the European corn borer, 
Lawrence L. Peirce of Arlington, Mass., has been temporarily 
assigned to assist L. H. Patch in ‘the corn borer investigations at the 
Sandusky, Ohio, laboratory during the present season. 
TAXONOMIC INVESTIGATIONS 
Si As Rohwer, Entomologist, in Charge 
“HH. F. Schwarz, of the American Museum of Natural History, spent two 
days early in April in the Division of Insects, studying the collectinn of 
bees belonging to the subfamily Anthidiinae.’ He is preparing a paper on 
the bees of this group as based on the io Bl ditish ion-in the baerinesnit Museum, 
and found it necessary to consult types in the collection.of the Museum. 
Dr. J. Chester Bradley, of Cornell University, arrived April 30 to 
spend two days in the nuseun discussing the problems of nomenclature with 
the hymenopterists. Dr. Bradley is very anxious to present certain matters 
to the International Commission, in the hope that they will set aside cer- 
tain type designations and certain publ ications, so that it will not be 
necessary to change a number of the family names within the order of Hy- 
menoptera, 
Ww. S- Fisher spent April 12 to 22 in Philadelphia, where he examined 
types of Buprestidae belonging to the genus 4grilus in the Academy of 
Natural Science. Mr. Fisher is preparing a revision of the North American 
buprestids belonging to the genus Agrilus, and before completing this re- 
vision it was necessary to study types of species described by Horn and 
other authors, 
April, 12.to.37 Dr. Hs Ee Ewing made a field trip to Norfolk, Va., to 
study the life history ani habits of chiggers. He plans to do a certain 
amount of field work on these insects during. the coming sumizer, and to 
undertake a few control experiments. 
. Dr. J. M. Swaine, of the Devartment of Entomology of Canada, arrived 
April 30, to spend a few days in the Museum, studying the types of Ceram- 
bycidae belonging to the genus Leptura. He is preparing a revision of the 
long-horned beetles of this genus, and finds it necessary to consult the 
materials in our collection, especially type specimens described by the 
late. Thomas L. Casey. 
Dr. Herbert Osborn, of Columbus, Ohio, spent a few hours on April 
27 in the section of insects, consulting with some of the Bureau specialists. 
