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 Tydens molestus INIoniez 

 in Peru and Belgium; it is found in guano. 



SEBACEOUS TUMORS in birds are caused by species Harpyryn- 

 chus. H, longip'ilus Banks attacks the crossbill. ]\Iice are attacked by 

 the mites Psorergates simplex musculinus IVIich, 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. Fsoroptes 

 cuniculi 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 folliculorum 

 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 gallinae 

 Redi, but there is reason to question this. 



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

 manyssus gallinae. 



INTERNAL ACARIASIS. CATARRHAL INFLAMMATION 

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

 tomum rliinolethruin 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 asphj'xia, may be caused by Pneumonyssus simicola of the monkey. 

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

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

 Heguin also attacks the air sacs in fowls. 



Nephrophages sangtdnarius INIiyake 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 

 spermoticus Trouessart is recorded from India. Cytoleichus sarcoptoides 

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

 Vizioli is suspected of producing PERITONITIS and ENTERITIS in 

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



