io8 Veterinary Medicine. 



Genus : Cytodites (Cytoi,eichus) (leicho to lick up). Round 

 body, conical rostrum, tubular sucker. 

 C. Nudus. Body round, smooth, hairless. In air sacs 

 of thorax, abdomen, bones of gallinaceae. 



Genus : SymplECTOPTES (symplectos entangled). Body oblong ; 

 transverse grove between the second and third pairs 

 of limbs ; legs short, with suckers. 

 S. Cysticola (Epidermoptes Cysticola). Live in 

 epidermis, cutis, loose subcutaneous connective 

 tissue. 



Sub-Family Sarcoptin^. Acari of scabies, mange, body ovoid, 

 convex above, flat below ; shields ; bristles. 



Genus : SarCOPTES (copteiu to hide). Males without ambula- 

 tory suckers on third pair of legs, or copulatory 

 suckers. Females have suckers on two first pairs 

 orly. 



Species : S. Scabei (Communis). Burrow under epidermis. 



Varieties : S. Scabei v. Hominis. Man. 



S. Scabei v. Equi. Horse, ass, mule. 



S. Scabei v. Ovis. Sheep, gazelle, moufflon. 



S. Scabei v. Caprae. Goat. 



S. Scabei v. Suis. Pig, dog. 



S. Scabei v. Lupis. Wolf, dog, deer, man (Norwe- 

 gian itch). 



S. Scabei v. Cameli. Camel, llama, giraffe, antelope. 



S. Scabei v. Canis. Dog. 



S. Scabei v. Hydrochceri. Ferret. 



S. Minor (Notoedris) Small S. Cat, rabbit, coati, 

 rat. 



S. Mutans (changing). Under leg scales of birds. 



S. Laevis (polished). 



S. Laevis v. Columbae. Pigeon. 



S. Laevis v. Gallinae. Chicken, gallinaceae. De- 

 pluming mange. 



Genus : Psoroptes (psora itch). Lives on skin among scales. 



Species : P. Communis (Longirostris). Rostrum a long cone; 

 third pair of legs end in bristles in the mature. 

 Causes scabies. 



Varieties : P. Communis v. Equi. Horse. General surface. 

 P. Communis v. Bovis. Ox. General surface. 



