DISEASFS OF POULTRY. 167 



Menopon phceostomum. Louse. Peacocks. 

 Docophorus icterodes. Louse. Ducks and geese. 

 Trinoton anseris. Louse. Geese. 

 Trinoton continuum. Louse. Geese. 

 Trinoton luridum. Louse. Ducks. 

 Trinoton lituratum. Louse. Geese. 

 Colpocephalum turbinatum. Louse. Pigeons. 

 Cheyletiella hcteropalpa. Mite. Pigeons. 

 Syringophilus bipectinatus. Mite. Fowls, Guinea fowls 

 and pigeons. 

 Syringophilus uncinatus. Mite. Peacocks. 

 Dermcglyphus elongatus. Mite. Fowls and Guinea fowls. 

 Derynoglyphus minor. Mite. Fowls and Guinea fowls. 

 Dertnoglyphus varians. Mite. Guinea fowls. 

 Freyana anatina. Mite. Ducks. 

 Freyana chanayi. Mite. Turkeys. 

 Megninia asternalis. Mite. Fowls and Pigeons. 

 Megninia cubitalis. Mite. Fowls. 

 Megninia ginglymura. Mite. Turkeys. 

 Megninia velata. Mite. Ducks. 

 Pterolichus obtuses. Mite. Fowls. 

 Fterolichus uncinatus. Mite. Turkeys. 

 Pterophagus strictus. Mite. Pigeons. 



General Considerations. — We have grouped 

 together, as epizoa which suck blood or gnaw the 

 flesh, a number of parasites which produce somewhat 

 similar effects, although, zoologically speakinge these 

 pests differ very widely. They resemble each other 

 in that they do not remain constantly upon the birds, 

 most of the varieties hiding about the roosts or houses 

 during the day, and coming out of their concealment 

 to make their attacks by night. They puncture the 

 skin, and suck blood for their nourishment. The 

 coleopterous larvae gnaw the skin, and even the super- 

 ficial muscles of the neck and abdomen of young pig- 

 eons, producing serious wounds and often causing 

 death. 



