108 PROCEEDINGS ENTOMOLOGICAL SOCIETY 



Wood, members and Messrs. Vernon Bailey, Adam Boving, H. G. 

 Dyar, W. T. M. Forbes, and H. B. Kirk, visitors. President Busck 

 occupied the chair. 



Mr. Rohwer reported that the vote taken in accordance with the 

 constitution for the election of Honorary Members resulted in the 

 unanimous election of Dr. David Sharp of England, and Dr. J. H. 

 Fabre of France. Mr. Rohwer also reported that the Executive 

 Committee had acted favorably on the najnes of J. M. Miller, 

 Joseff Bruner, and W. D. Edmonson'for corresponding membership 

 and on a vote of the Society they were duly elected. 



The first paper of the evening "The Insect Host of Forest M 

 ria" by Dr. Adolph Lutz was read by Dr. L. 0. Howard. 



THE INSECT HOST OF FOREST MALARIA. 



t 



BY DR. ADOLPH LUTZ, Rio de Janeiro. 



I see by the PROCEEDINGS OF THE ENTOMOLOGICAL SOCIETY or 

 WASHINGTON that Mr. F. Knab read a paper, "The Dependence 

 of Disease Transmission by Blood-Sucking Insects Upon Habits." 

 When Dr. L. 0. Howard cited a paper of mine Mr. Knab declared 

 that he had just discussed this paper from his present view point 

 with Dr. Dyar and they had come to the conclusion that I had mis- 

 interpreted -the facts. A similar statement is repeated in a paper 

 in the Journal of Economic Entomology. To explain this singular 

 conclusion Mr. Knab thinks it highly probable "that the men ob- 

 served by Lutz already harbored malaria in a latent form when they 

 came into the region and that the exertion and exposure incident 

 to the work caused the irruption of the disease. " 



If such an etiology of a typical epidemic was possible, which no 

 competent person would admit, the people living here and inter- 

 ested in the case would not have waited for two laymen to think of 

 it and I would not have troubled to find a satisfactory explanation 

 for a puzzling fact. Mr. Knab however continues: 



"It is a well known fact that in the tropics most persons appa- 

 rently in good health have latent malaria." Leaving alone the 

 fact that the place of observation and the places where the pa- 

 tients came from have not a tropical climate, the statement itself 

 is utterly erroneous and about equal to the statement that in hot 

 countries everybody is suffering from liver disease. After exclud- 

 ing typhoid fever and other pyrexias with different etiology, it has 

 become evident that malaria is very much localized and by no 

 means generally prevalent, even in tropical countries. In fact it 



