498 



SWIXE IX AMERICA 



ail inch long. The color is a dirty, bluish gray. The 

 sliarp claws seen in the illustration are not used to hurt 

 the pig, but are fur the purpose of clasping the hairs 

 tightly, from which it is not easy to remove the lice. The 

 food is taken through a sharp rostrum or beak, which is 

 thrust into the skin of the host. The beak is not shown 

 in the illustration here, as it is always retracted when 

 not in use. 



HOG LOUSE HALF GROWN, AND EGGS 



"The sketch represents three eggs. From one to a 

 half-dozen eggs may be found in this way fastened to a 

 single hair. They are three sixty-fourths of an inch in 

 length, and the lower or inner end is ahvays attached by 

 means of a tough, gluey substance that usually incloses 

 the hair. The upper or outer end of the egg is the one 

 from which the louse makes its exit. This end has a 

 somewhat darker colored cap. which is pushed ofif by the 

 young louse before coming forth. The egg is wdiite in 

 color, and is covered with small, regularly arranged pits 



