ACARINA PARASITES. 



643 



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

 with considerable rapidity by means of their fringed legs, 



Fig. 297. 



I, Parasite of Eagle. 2, Parasite of Vftlture. 3, Parasite of Pig 3 on. 

 circles 3iiclose each about life size). 



(Tii 



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 ; 

 T T 2 



