[49] 



Adaptation of Ticks 



327 



Argasidae 

 A. brumpti 



0. savigmji 

 O. moubata 



0. turicata 



0. talaje 



O. talaje var. ca- 

 pensis 



O. pavimentosus 

 0. tholozani ... 

 O. lahorensis ... 



0. megnini 



Hosts and habitat etc. of Tick 



Porcupine : found infesting dusty burrows of 

 Hystrix sp. in Africa. 



Man : attacks man when sleeping on the 

 ground ; hides in dust during the day-time. 



Man, camel, horse : attacks them in their rest- 

 ing places, hides in dust or sand, etc. 



Man : infests native dwellings and resting 

 places along caravan routes. 



Domesticated animals : dogs, pigs kept in styes, 

 goats, sheep. 



Man: at times infesting native dwellings; 

 attacks at night. 



Domesticated animals : pigs in styes, cattle, 

 llama, horse. 



Wild animals : infesting burrows of tortoise 

 and gopher. 



Man : infesting native houses ; attacking at 

 night. 



Birds : found in penguin's and other nests. 



Man: resting places infested. 



Fowls and camels : infests chicken coops. 



Sheep : no particulars as to manner in which 

 sheep are kept. 



Man and domesticated animals : horse, ass, 

 ox, are all the hosts recorded ; occurring 

 chiefly in the ears. 



Geographical 



distribution 



(as far as known) 



Africa. 



Africa, India. 

 Africa. 



N. & S. America. 



N. & S. America. 



Islands of Cape 

 Colony, St Paul's 

 Isl., Siren Isl. 



Africa. 



Persia. 



India. 



N. America. 



Of the foregoing species the life-histories of only five are known 

 (A. persicus, A. reflexus, 0. moubata, 0. savignyi, and 0. megnini), the 

 ticks having been raised experimentally. The various stages of A. ves- 

 pertilionis are known, and nymphal or adult stages (or both) of some 

 of the other species are more or less known to science. In A. persicus, 

 A. reflexus, A. vespertilionis and 0. megnini the larvae attack the host. 

 In 0. moubata and 0. savignyi, in which the eggs are correspondingly 

 large, the larva is formed within the egg, but it is incapable of attacking 

 a host; the larva in both of these species is inactive, and very soon 

 after the egg-shell splits and whilst it remains in (moubata) or near 

 (savignyi) the egg-shell it rapidly undergoes metamorphosis and emerges 

 from the larval skin as a nymph. It is as a nymph that both the 

 latter species first attack the host. 



