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TAXONOMIC INVESTIGATIONS 
S. A. Rohwer, Entomologist, in Charge 
Dr, H. H. knight's temporary appointment as Entomologist expired on 
August 20, and Dr. Knight left for Iowa on August 31. While here, he re- 
arranged the entire collection of North American bugs of the family Miridae 
and determined a large part of the unidentified North American material. The 
Nearetic collection of Miridae is now in very satisfactory condition, After 
the termination of Dr. Knight's appointment with the Bureau he was employed 
by the Biological Survey to identify.its material in the family Miridae. 
Dr. H. G, Dyar returned to Washington on August 23, after a four 
months! trip in the Northwest. He spent most of his time at a ranger camp 
near Belton, Mont., and made -some very interesting collections of mosquitoes, 
aS well as notes on- their habits, and saved material of the immature: stages. 
Forest fires considerably hampered Dr. Dyar's work, and he was unable to do 
as much collecting in high altitudes as he expected. 
H. G. Barber's temporary. appointment as Assistant Entomologist ex- 
pired on August 7, and he returned to his home in New Jersey some time later - 
in the month. While here, Mr. Barber arranged: the Neotropical collections = 
of bugs belonging to the family Reduviidae and identified a great deal ‘of 
the previously unidentified material from the Neotropical region. The 
reduviids of North and South America are now very satisfactorily arranged in 
the collection, 
Drie day Ce Schuurmans-Stetchoven, of Holland, who is studying in Wash- 
ington in Dr, Cobb's laboratory, is spending evenings and holidays in the 
Division of Insects, Studying material of horse flies and Pupipara. Dr.’ 
Schuurmans -Stetchoven has recently published a large synoptic paper on the 
Tabanidae in the Hast Indian Islands, and has been able to identify a number | 
of specimens from this region for the National Collection. His work on 
louse flies is greatly expedited by loaned material from various institutions 
in the United States, as well as material from European collections which he 
brought with him, ee 
br. C. E, Mickel, of the University of i/innesota, spent the week com- 
mencing August 23 in the Division of Insects studying types of the family 
Matillidae, Before returning to. St, Paul, Dr. Mickel expects to visit col- 
lections in Philadelphia, New York,. Quebec, Ottawa, and Ann Arbor, This work 
will permit him to complete his revision of the North American species of 
the genus Dasymutilla, This genus is the largest genus of mutillid wasps in 
the United States, and one which for a long time has been badly in need of 
revision, 
Dr. BE, A. Chapin has recently donated to the National Museum his 
very valuable collection of ectoparasites, For a number of years he has been 
interested in the study of fleas, lice, ticks, and other ectoparasites, and 
has been able to build up a very interesting collection containing represen- 
tatives of many species which are not represented in the Museum, This dona- 
tion by Dr. Chapin is the largest gift of ectoparasites the Museum has 
received recently. 
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