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TAXONOMIG INVESTIGATIONS 
a A, Rohwer, Entomologist, in Charge 
Dr. J. M. Aldrich, Dr. H. E. Ewing, A. N. Caudell, Harold Morrison peed 
S. A. Rohwer attended the Philadelphia meetings of the American Association 
for the Advancement of Science. Dr. Aldrich presented a paper on "Collecting 
Diptera in Guatemala," Dr. Ewing one on "The Hippoboscid Fly, Ornithomyia 
avicularia Linnaeus, as 4 Carrier of Mallophaga," and Mr. Rohwer took part in 
the symposium on needed lines of investigation in American Enon a discussin 
the taxonomic ‘work, 
Dr. H. W. Allen, of the Japanese Beetle Laboratory, Riverton, N. J., 
worked at the Division of Insects on December 2 and 3, examining material of 
Tiphia in the National Collection, consulting about plans for working up the 
material received by the Japanese Beetle Laboratory, and making arrangements 
to secure literature. | 
Among the hemipterists recently visiting the Division of Insects were 
Dr, Carl J. Drake, of Iowa State College, who on December-24, 25,and 26 
‘worked on the Hemiptera collections; Dr, H. B. Hungerford, of the University 
of Kansas, who spent December 27 examining the,collections of aquatic Heterop-. 
tera; and Dr. D, M. DeLong, Columbus, Ohio, who. devoted the same day to study- 
ing types of Hmpoasca, 

Prof, Heinrich Prell, of the Forestry School in Tharandt, Saxony, 
Germany, who is spending some. time in the: United States as a traveling fellow 
in entomology, was for a number of days between. December. 13 and 23 in the 
Division of Insects, where he consulted with various specialists, arranged to 
obtzin material of the genus Dendroctonus, and studied methods of housing col- 
lections . He was accompanied by Mr. Barber to Plummer's Island, where he 
obtained specimens of the larva of Micromalthus debilis Lec. 
Dr, Kamal, of Egypt, visited the Section of Insects on December 24, 
making the acquaintance of the various specialists and studying methods of 
handling collections, 
H. F. Barnes, who has a traveling fellowship from the Southeast Agri- 
cultural College, Wye, England, and is spending the winter studying gall 
midges with Dr. RB. P. Felt, at Albany, NAT Ye visited the Division of Insects 
for Several days in Christmas week, . 
Drie Ww, ty Ridow, of the University of ‘Minnesota, visited the Section 
of Insects on December 14 and 15. 
G. B. Merrill, of Gainesville, Fla., Spent the morning of December 24 
studying Coccicae with Mr, Morrison, and will) be here three days, beginning ~ 
January 3, ; , , Chon ae : 
G. M. Greene, of Harrisburg, Pa., was a visitor to ‘che Division of 
Insects on December 31. 
