6o Mites InjurioTis to Domestic Animals. 



nodules or cysts of varying size in the subcutaneous tissues. The 

 living mites can be found in tlie tissues and not in the cysts, wHch 

 apparently are formed round dead specimens. 



Meroier and Lebailly discovered numerous specimens of these 



Fig. 45. 



SchOngastia americana. Hirst (p. 78). — A larval Trombidiid mite' 



occurring on the domestic fowl in North America, X 236. 



(a) Scutum of same greatly enlarged, (b) A hair greatly enlarged. 



(Original.) 



two species of mites in a hen which had a cancerous tumour {myxo- 

 sarcoma) adhering to the wall of the air-sac^ near the kidney, and 

 suggest that Gytoleichus nudus may, perhaps, inoculate the virus 

 of the disease in much the same way as has already been done 

 experimentally by means of the needle of a hypodermic syringe. 



