46 Mites Injurious to Domestic Animals. 



Besides the three kinds of mange described above, pruritus 

 and other trouble may be caused by Demodex (see page 80). 



Genus Notoedrus, Railliet, 1893. 

 Very similar to Sarcoptes, but with the anus well on the dorsal 



FIG. 28. 



Pterolichus sp., from interior of quills of feathers of North American 

 fowl. Male from above, x 216. (Original.) 



surface. This genus is not very distinct from Sarcoptes, and should 

 perhaps be considered only a sub-genus. 



