June, ’24] 
MEDICAL ENTOMOLOGY 
435 
Notes on Medical Entomology 
Prof. G. M. Bentley gave a talk on Hypoderma lineata before the Agricultural 
Club of the University of Tennessee on April 30, accompanying his talk with U. S. 
motion picture reel on this insect. 
A number of cities in the Southwest are beginning active campaigns against 
mosquito breeding places with a view to preventing a recurrence of the dengue 
epidemic, and also to reduce malaria incidence as well as eliminate annoyance from 
mosquitoes. 
Mr. William A. Hoffman from the School of Public Health, Johns Hopkins 
University, recently spent several days at the U. S. National Museum in studying 
blood-sucking flies. Mr. Hoffman was especially interested in members of the genus 
Culicoides and related forms. 
Mr. W. E. Dove, who was formerly connected with the office of the Bureau of 
Entomology dealing with insects affecting live stock has been reappointed and is to 
devote the major part of his time to investigations of the cattle grub, screw worm 
and horse flies. His headquarters will be Dallas, Texas. 
About the middle of May, Dr. Roark of the Bureau of Chemistry reached Dallas 
where he is to work co-operatively with the agents of the Bureau of Entomology on 
the problem of developing satisfactory repellents for the screw worm and related 
blow flies. Considerable time is to be spent on ranches in the vicinity of Uvalde, 
Texas, in the actual treatment of screw worm cases. 
The Bureau of Entomology recently received for identification a larva of Hypo- 
derma hneatum Vilh, from the Parshall, N. D., Public Health Laboratory, sent in by 
Dr. P. B. Carter, who stated that it had been taken from the elbow of a little girl 
five years of age. It had burrowed under the skin across the child’s back. This 
maggot normally lives in cattle, burrowing into the skin in the same way. 
Prof. F. M. Root, of the School of Public Health, Johns Hopkins University, spent 
a day in the U. S. National Museum consulting with Mr. Greene on characters of 
muscoid larvae. Dr. Root has recently published a short paper setting forth some 
of the characters of these larvae, and Mr. Greene has also spent considerable time on 
members of the same group. Dr. Root was also interested in the South American 
fleas and mosquitoes. 
Mr. Eric Hearle of the Vernon, B. C., Laboratory, Entomological Branch, 
Canadian Department of Agriculture, visited Kelowna on February 8 and 9 in con¬ 
nection with mosquito control work as a result of a request from the local committee 
in charge. Arrangements have been completed for continuing the control work in 
the Banff district. Mr. Hearle reports that the season is greatly advanced apd the 
weather milder than has occurred during the same period for seventeen years. 
