196 K. E. DRAKE-BROCKMAN. — BIONOMICS OF ORNITHODORUS SAVIGNYI. 



corrosive sublimate, I have found the ticks ahve and active. Immersion in a 5 per 

 cent, sohition of Ivsol for half an hour however seems to have a deleterious action on 

 them, some dying, though others recovered after a prolonged rest. Thus it will be 

 seen that mere spraying the soil or even soaking it is quite useless. 



If Orniihodorus savignyi is touched with a drop of oil of turpentine it at once dies, 

 and I have taken advantage of this fact to recommend all native soldiers with bare 

 feet, when entering a locahty where the ticks are known to swarm and are infected 

 with the spirochaete of relapsing fever, to rub their feet and ankles with turpentine, 

 and I consider this likely to prove a valuable prophylactic measure. 



The Somali name for the tick is " kudkudeh " or " kudkuda." 



