z' 



Div. insects; 



Bulletin No. 25— New Series. 



U. S. DEPARTMENT OF AGRICULTURE. 



DIVISION OF ENTOMOLOGY. 



NOTES 



ON 



THE MOSQUITOES OF THE UNITED STATES: 



GIVING SOME ACCOUNT OF THEIR STRUCTURE AND BIOLOGY, 

 WITH REMARKS ON REMEDIES. 



BY 



L. O. HOWARD, Ph. D., 



Entomologist. 



ziA^'IS^ 



WASHINGTON: 



GOVERNMENT PRINTING OFFICE. 



1900. 



