36 Mites Injurious to Domestic Animals. 



elevations can sometimes be felt if the hand is passed over the 

 skin. Horses suffering from this kind of mange try to rub them- 

 selves against any suitable object, and bite those parts of the body 



FIG. 18. 



Hypopial nymph ("Hypodectes") of Faculifer rostratus (p. 63); from 

 pigeon, X 80. (After Neumann.) 



which they can reach. When the affected parts of the body are 

 scratched with the hand the animal shows signs of pleasure, moving 

 the end of the nose in a characteristic manner. Any part of the 

 body may be attacked, but those parts which come in contact with 



