Press Bui, 20, Issued July 25, 190/. 



Hawaii Agricultural Experiment Station, 



HONOLUL U 



J. G. SMITH, Special Agent in Charge. 

 PRESS BULLETIN NO. 20. 



THE INTRODUCTION OF TOP-MINNOWS 



(Natural Enemies of Mosquitoes) 

 INTO THE HAWAIIAN ISLANDS. 



In Cooperation with the Board of Health, Territory of Hawaii 

 and Leland Stanford Junior University. 



By D. L. Van Dine, 



Entomologist, Hawaii Agricultural Experiment Station, United 

 States Department of Agriculture. 



Fig. i. — Top-Minnow, Mollicncsia latipinna. (U. S. Fish 

 Commission.) 



In December, 1902, a survey of Honolulu and vicinity was 

 begun to determine the character and location of the bodies of 

 water responsible for the great numbers of mosquitoes that 



