Mites Injurious to Domestic Animals. 35 



most serious owing to the burrowing habits of the parasites, which 

 make it difficult to reach them with acaricidal solutions. Mange in 

 horses is very common in war time, great numbers of animals being 

 afiected, whilst it is comparatively rare in normal times. All newly 



Fig. 17. 



Laminosioptes cysticola (p. 59). — An internal parasite of the domestic fowl. 

 Ventral view of female, x 376. (Original.) 



purchased animals should be carefully examined for symptoms of 

 mange. 



Sarcoptic mange commences by little circular hairless places 

 and small elevations, accompanied by intense itching ; these little 



D 2 



