CONTENTS 
Page; 
Distribution '•» 
Hibernation 10 
Spring, su miner, and autumn migrations 18 
Oviposition 20 
Egg period and number of eggs deposited by each female 20 
Descriptions of the differenl stages of developmenl 21 
Development and habits of tin* young 22 
Number of generations annually 25 
Destructiveness largely due to gregarious habits 28 
Food plants 2<i 
Insects that are mistaken for chinch bugs 31 
Losses caused by chinch bugs :'».'! 
Natural checks 36 
Influence of precipitation on the chinch bug 3G 
Inilnence of temperature on the chinch bug 43 
Natural enemies 44 
Parasitic fungi 44 
Fungous enemies of the chinch bug determined 46 
Field and laboratory experiments in Indiana 47 
First field applications of fungous enemies of the chinch bug 51 
The work of Professor Snow in Kansas 51 
Other insects attacked by Sporotrichum globuliferum 53 
First artificial cultivations of Sporotrichum globuliferum 54 
Results of field applications in Ohio 54 
Meteorological influences favoring development of fungous ene- 
mies of the chinch bug 56 
A bacterial enemy of the chinch bug f>7 
The practical utility of fungous and bacterial enemies in fighting the 
chinch bug 58 
The bobwhite or quail 58 
Other bird enemies of the chinch bug : 59 
The frog 59 
Invertebrate enemies of the chinch bug GO 
Remedial and preventive measures 60 
Destruction of chinch bugs while in hibernation 01 
Sowing decoy plats of attractive grains or grasses in early spring 62 
Difficulty of reaching chinch bugs in meadows 02 
Watchfulness necessary during protracted periods of drought <;:; 
Utility of kerosene in fighting chinch bugs t;i 
Utility of deeply plowed furrows supplemented by the use of kerosene 
emulsion 65 
The surface and coal-tar method 65 
5 
