408 SANITARY ENTOMOLOGY 



causes white tubercles on the skin of swine in the United States and 

 Canada; Demodex bovis Stiles causes swellings in the hide of cattle in 

 the United States and other countries, damaging the hide. 



GUANO ITCH of man and dogs is caused by Tydeus molestus Moniez 

 in Peru and Belgium; it is found in guano. 



SEBACEOUS TUMORS in birds are caused by species Harpyryn- 

 chus. H. longipilus Banks attacks the crossbill. Mice are attacked by 

 the mites Psorergates simplex Trmsculmws Mich, which lives in cavities 

 beneath the surface of the skin, and Myohia musculi Schrank which de- 

 velops in the hair follicles. 



ACARIASIS OF THE SENSE ORGANS. OTOACARIASIS is 

 caused in man by Cheyletus eruditus Schrank and Acaropsis mericourti 

 Laboulbene which attack the external auditory meatus. Rhizoglyphus 

 parasiticus has also been recorded as causing Otoacariasis. Psoroptes 

 cuniciili Megnin causes a rabbit ear mange which may result in death. 

 Otodectes cynotis causes an otoacariasis of the dog and cat, which tor- 

 ments the animals, resulting in convulsions and fits. Demodex folliculorimn 

 Simon is also credited with causing otoacariasis. 



Some of the ticks are also responsible for attacks of otoacariasis, as 

 for instance the spinose ear tick Ornithodoros megnini (Duges) Neu- 

 mann, which very commonly attacks the ears of cattle and horses and 

 sometimes man in the southwestern United States. 



A fatal otoacariasis in the cow is charged to Dermanyssus gallimae 

 Redi, but there is reason to question this. 



OCULAR ACARIASIS of the cornea may also be caused by Der- 

 manyssus gallimae. 



INTERNAL ACARIASIS. CATARRHAL INFLAMMATION 

 which may produce ASPHYXIA in chickens may be caused by Sternos- 

 tomum rhinolethrum Trouessart and by a Rhinonyssus in birds. BRON- 

 CHIAL INFLAMMATION which may produce asphyxia may be caused 

 by Halarachne americani, H. attenuata, and H. halichaeri, all of which 

 attack seals. INFLAMMATION OF THE LUNGS, which may pro- 

 duce asphyxia, may be caused by Pneumonyssus simicola of the monkey. 

 Cytoleichus modus Vizioli occurs in the air passages of chickens and tur- 

 keys, penetrating the tissues, and may produce asphyxia. C. sarcoptoidej 

 Heguin also attacks the air sacs in fowls. 



Nephrophages sanguinarius Miyake and Scriba is a doubtful parasite 

 passed in bloody urine. Carpoglyphus alienus Banks has been found in 

 purulent urine. A case of a cyst in the testis containing Histiogaster 

 spermaticus Trouessart is recorded from India. Cytoleichus sarcoptoides 

 Heguin is sometimes found in the liver and kidneys of the fowl. C. nudus 

 Vizioli is suspected of producing PERITONITIS and ENTERITIS in 

 chickens and turkeys. C. banksi Wellman also produces an internal 



