DISEASES OF POULTRY. 165 



CHAPTER IX. 



Parasites and Diseases of the Skin. 



THE EPIZOA OR PARASITES WVING UPON THE EXTERNAI< SUR- 

 FACE OF THE BODY — SCABIES OR MANGE OF THE BODY — 

 SCABIES CAUSED BY EPIDERMOPTES — SCABIES CAUSED BY 

 SARCOPTES, DEPLUMING SCABIES — ^FAVUS — CHICKEN POX, 

 SORE HEAD, PIGEON POX. 



THE EPIZOA OR PARASITES LIVING UPON THE EX- 

 TERNAL SURFACE OF THE BODY. 



©UR domesticated birds are liable to be infested 

 with a considerable number of species of ex- 

 ternal parasites. These parasites living upon 

 the surface of the body are grouped as episoa. 

 Space will not permit a detailed description of the 

 various species, but the following list gives the scien- 

 tific name, the popular name, when possible, and the 

 kind of bird infested : 



Group i. epizoa which suck blood or gnaw the flesh. 

 Pulex avium. The bird flea. Fowls, pigeons, and many 

 other birds. 



Acanthia columbaria. Dove-cote bug-. Fowls and pig-eons. 



Dermestes lardarius I,arv2e 1 



Tenebrio molitor I ^^ 'j. Young pigeons. 



Necrophorus (Various Coleoptera I 

 Silpha (species. J ^ > 



Argas reflexus. Pigeon tick. Pigeons. 

 Leptus autumnalis. Harvest bug. Fowls. 

 Dermanyssus gallince. Red mite. Poultry, pigeons, and 

 house birds. 



