394 ECONOMIC ZOOLOGY AND ENTOMOLOGY 



cleanliness. Infested clothes that may contain some of the 

 eggs should be boiled or steamed, or the inside of the seams 

 smeared with mercurial ointment. The crab-louse, Pthirius 

 inguinalis, lives on the hairs on protected parts of the body. 

 Sulphur and mercurial ointment are ths remedies used. 



FIG. 182. A chicken-louse, Menopon pallidum. (Greatly enlarged.) 



Most of the sucking lice on domestic animals belong to the 

 genus Hcematopinus. Dogs, horses, cattle, sheep, hogs and 

 other animals are infested with species peculiar to themselves. 

 The animals may be freed from these pests by washing 



