Injurious 'to Alan. 



37 



specific organism than to a virus secreted by the parasite. 

 According to Kotzebue and also Oken, villages in Persia may 

 become so infested with the tick that the inhabitants are obliged 

 to burn or abandon them. In Persia the fowl-tick is called the 

 "Miana Bug" (Mialleh de Mianeh), ''■ Shebgaz," and " Guerib- 

 Guez "; in Mexico, the "Chinche" or "Adobe-tick," but the latter 

 name possibly refers to Omithodoros turicata. 



Argas yersicus is very widely distributed in the warmer, 

 temperate, and in the tropical regions of the world. In North 



Fig. 16. 



The fowl tick {Argas persicus, Fischer). 

 (After Brumpt.) 



Female. 



America it is usually referred to under the scientific name 

 A. miniatus. It transmits the spirochaetosis of fowls. 



Genus — Omithodoros, Koch. 



Omithodoros moubata, Murray. 



The Tick which Transmits the Eelapsing Fever of 



Tropical Africa. 



This tick is widely distributed in Africa, living in native huts, 

 where it conceals itself during the daytime in the crevices of the 

 walls or in the dust on the floor. It is in localities on the trade- 

 routes that this tick is usually found. The absence of eyes is a 



