Mites Injurioits to Domestic Animals. 37 



the saddle or- harness are usually afiected first. The disease often 

 commences on the withers, spreading afterwards on to the back 

 and sides. The hair is thin and broken in the rubbed parts of the 



\,^\ 



' '^mmi 



u 



L-il 



Highlev 



Fig. 19. 



Megninia sp. (p. 63) — From domestic fowl, in North America. Ventral view 

 of male. (Original.) 



body, and abrasions or excoriations may be present. In advanced 

 cases the skin is hard and folded, and the animals become very 

 thin and may die of exhaustion. 



