62 PARASITOLOGY. 
SyMBIOTES AURICULARUM, variety Canis (Auris—ear) 
(Canis—dog). 
Animal Infested.—The dog. 
Names of Disease.—Otacariasis, auricular scabies, 
parasitic otitis, epileptiform disease of dogs. 
Condition Produced; Symptoms.—The parasites 
produce an inflammation of the external ear, and in 
some cases ulcers are observed. In the scrapings 
from these ulcers the Acarican befound. Evidence 
of itching is manifested; the dog shakes his head 
from side to side and scratches his ears with his 
paw. The hunting dog, after vigorous exercise, 
shows symptoms like those of epilepsy. Later the 
dog is attacked more frequently with these fits, and 
becomes sullen, with a tendency to be cross. 
Treatment.—Disinfect kennels with five-percent 
kreso, or sediment from the lime and sulphur dip, 
etc. 
Thoroughly cleanse the ear and apply the follow- 
ing 
Naphthol_____.---222- ee 5V 
Btheries) oS coo ee se) OXV 
M. Sig.—Inject a small quantity of this mixture 
into external auditory canal once a day. 
A saturated solution of alcohol with boracic acid 
can be used. 
Cytopires Nupus (Cyto—cell; Nudus—nude). 
Synonym.—Air-sac mite. 
History—Found in Colorado, Wyoming, Iowa and 
New York. 
Description.—Scarcely visible macroscopically. 
The body is rounded in shape and whitish in color. 
The rostrum is conical. The legs are strong, con- 
