ACARINA PARASITES. 



643 



Water-mites, inhabit the water, where they swim about 

 with considerable rapidity by means of their fringed legs. 



Pig. 207. 



1, Parasite of Eagle. 2, Parasite of V&ture. 3, Parasite of Pigeon. (Tfte 

 circles juclose each about life size). 



In their young state, they attach themselves parasitically 

 to aquatic animals ; they then possess only six legs, and 

 pass through a quiescent or pupa state before acquiring 

 the fourth pair. Orbitadce, unlike other Acarea, live 

 upon vegetable matter, principally damp leaves and moss ; 



TT2 



