Mites Injurious to Domestic Animals. 67 



Rivolta), which have the skin only weakly chitinized, live on the 

 surface of the skin of the domestic fowl. In some cases of squamous 



FIG. 55. 



Dermanyasus gollinoe (p. 87). Dorsal view of female, x 104. 

 (Original.) 



skin diseases (Pityriasis) they have been found in great numbers and 

 have been accused of causing the trouble. 



F 2 



