October, '22] medical entomology notes ^^^ 



any pest. Mr. Zetek also reports the papaya fruit fly very abundant and well 

 distributed wherever papayas are grown. In some of the papaya groves the damage 

 due to this species amounts to 90 per cent, of the crop. In some parts of the mterior 

 of Panama it is impossible to grow papayas without having them infested, unless the 

 very thick-fleshed varieties are grown. The picking and destroying of infested 

 papayas, and allowing chickens to live in the grove, are the two most efficient control 

 measures. 



Mr. Harry Hargreaves, Government Entomologist of the British Protectorate of 

 Uganda, Central Africa, spent several days in Washington recently visiting the 

 Bureau of Entomology and acquainting himself with its work. 



Mr. F. X. Williams, an entomologist of the Hawaiian Sugar Planters' Experiment 

 Station, recently spent ten days in Washington on his way to northern South America 

 where he will search for parasites of the sugar-cane wireworm in Hawaii. 



Mr. G. S. Cotterell, a Carnegie scholar, has arrived in Washington and will spend 

 about four months in the United States to familiarize himsel with economic entomol- 

 ogy in this country. He is Assistant Government Entomologist, Gold Coast Colony, 

 West Africa. 



Prof. Alphonso Herrera, Director de Estudios Biologicos de Mejico, visited the 

 Bureau of Entomology at riiflferent times during the latter part of August. Professor 

 Herrera has been investigating the research work of the Government, but has been 

 especially interested in entomology. 



Mr. Faustino Q. Otanes, of the Bureau of Agriculture, Philippine Islands, visited 

 the Bureau of Entomology' and will spend several months in the United States, 

 familiarizing himself with the work being carried out by the Bureau at its various 

 field stations. 



In the United States Bureau of Entomology, Dr. C. L. Marlatt, assistant chiefs 

 has been advanced to Associate Chief of the Bureau in Charge of Regulator^' Work,, 

 and Dr. A. L. Quanitance, in charge of Fruit Insect Investigatioyis, has been ad- 

 vanced to Associate Chief in Charge of Research Work. 



Preliminary tests of the efficiency of the aeroplane in distributing calcium arsenate 

 dust upon cotton fields for control of the boll weevil were conducted during the latter 

 part of the month at Scott, Miss., under the direction of B. R. Coad, of the Bureau 

 of Entomolog}'. Mr. Coad reports a remarkable evenness of distribution of the 

 poison by this method. 



Notes on Medical Entomology 



Dr. T. J. Headlee visited Providence, R. I., September 11-13 to give expert advice 

 in mosquito eradication in connection with the local campaign there. 



Dr. W. V. King of the Biu-eau of Entomology attented a conference at Hamilton, 

 Mont., on July 27, in order to obtain information regarding spotted fever conditions. 



Prof. W. A. Riley of the University of Minnesota, is a member of an expedition 

 from the Johns Hopkins University to Porto Rico to investigate the hook worm 

 disease. 



