ACARTNA PARASITES. 



643 



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

 with considerable rapidity by means of their fringed leys. 



Fig. 



1, Parasite of Eagle. 2, Parasite of Vulture. 3, Parasite of Pigeon, 

 circles enclose each about life size). 



(The 



In their young state, they attach themselves parasitically 

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

 pnss 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 



