SIPHONAP TER A. 
493 
The Chigoe (Chig'o) or Jigger, Sarcopsylla pe 7 ietrans 
(Sar-co-psyl'la pen'e-trans), is a small flea found in the West 
Indies and South America, which often causes serious 
trouble to men by burrowing beneath the skin of the foot. 
It is the fertile female that does this, and soon after enter¬ 
ing its host the body of the flea becomes distended with 
eggs and acquires the size of a pea. 
In the southern United States the names Chigoe and 
Jigger are improperly applied to the harvest-mites, which 
are the immature six-legged forms of various mites that 
attach themselves like ticks to the skin and become gorged 
with blood. 
