2214 



THE DERMATOZOIASES 



' pou d'agonte' of Guiana, the ' niaibi ' of New Granada, the 

 * Colorado ' of Cuba, the ' mouqui ' of Para, and the * bete 

 rouge ' of Martinique and Honduras, are not known. 



Trombidium wichmanni Oudemans, 1905, is the gonolie of 

 Celebes, whose larvae attack man, burrowing into the skin 

 as just described above. 



Trombidium vandersandei Oudemans, 1905, is the gonone of 

 New Guinea, which acts like T. wichmanni. 



The Leptus stage of an unknown Trombidium is reported 

 in North Queensland. 

 Tetranychid^. 



Tetranychus molestissimus Weyenbergh, 1886, causes severe 

 itching in the Argentine and Uruguay during the months 

 December to February, by thrusting its hypostome into 

 the skin, and thus causes ' Bicho-colorado itch.' 



EUPOPID^. 



Tydeus molestus Moniez, 1889, is the cause of ' Guano itch.' 

 Tarsonemid^. 



Pediculoides ventricosus Neuport, 1850, is the cause of 'grain 

 itch,' and being a parasite of the pink boUworm of cotton, is 

 found in cotton infested with this pest, and from this 

 source has attacked persons handling the infected cotton in 

 Egypt and England. 



Tarsonemus uncinatus and T. intectus are also known to 

 attack man. 

 Tyroglyphid^. 



Tyroglyphus longior Gervais var. castellanii Hirst, 1912, is the 

 cause of ' copra itch.' 



Tyroglyphus siro Linnaeus, 1758, and Aleurobis jarinm de 

 Geer are beheved to be the cause of 

 vanillismus. 



Glyciphagus prunorum Hermann is the 

 cause of ' grocer's itch.' 



Rhizoglyphus parasiticus Dalgetty, 1901, 

 is the cause of a type of so-called 

 'coolie itch' of the feet. Bell states 

 that it causes a large circular super- 

 ficial sore on the sole of the foot. 

 This is produced by numbers of the 

 parasite invading the skin. 

 Sarcoptid-^. 



Sarcoptes scabiei var. hominis Linnaeus, -r- or -m • ^ 

 ^ /o • ,1 r 1 • . ' Fig. 869. — Rhizogly- 



1758,^ is the cause of scabies m man. p^us parasiticus: 

 In addition to this common parasite, Male. 



there are several varieties, usually (After Dalgetty.) 



occurring in the domestic animals, 



which may at times attack man — e.g., Sarcoptes scabiei var. 



canis, found in the dog; S. scabiei var. avis in the sheep; 



