Mites Injurioits to Domestic Animals. 



71 



horses — forinstance, Aleurobius farinae, Tyroglyjjhus lonrjior (fig. 37), 

 Glycyphagus domesticus, G. cadaverum, and G. ornatus. Hypopial 

 nymphs of several tyroglyphid mites have also been found on horses. 



Aleurobius farinae, De Geer, 1778. 

 This species is a well-known pest of grain and is sometimes also 



Fig. 59. 



Dorsal view of first nymph (protonymph) of Dermanyssus 

 gallinae (p. 87), X 146. (Original.) 



found in cheese and other substances. It is said by Shipley to 

 occur frequently on the red grouse {Lagojms scoticus). 



Glycyphagus domesticus, De Geer, 1778. 

 C. J. Davies records the presence of a Tyroglyphid mite in the 

 ear of tame rabbits. The mite has been determined by A. W. N. 

 Fillers as Glycyphagus domesticus, De Geer (fig. 38). 



