proach of dav it leaves its victim and retires to a dark, 

 secluded spot. A space beneath tlie end of the perch 

 or under the nest or between the cracks of the floor 



The Ked Poultky Mite. 

 Dermanyssus oaUinoe— Female— 80 times natural size. 



or vv'alls nuiy sometimes contain a large number of 

 these parasites, both male and female, together with 

 a quantity of eggs and young. They multiply so rap- 

 idly that after a few have been introduced into the 

 poultry house it may become overrun within a few 

 weeks, lliis mite is very resistant and difficull to de- 

 stroy. Some of them have been prescivcil alive with- 

 out food for more than a year. 



In contradistinction to the habit of the bird lice, this 



