ENTOMOLOGY

TH~ BIOLOGIES AND HABITS OF TICKS 433Pocock.-This tick is a common parasite of man in a large part of tropicalAfrica. It also feeds on domesticated animals. It lives in the hutsand is carried about by the natives in their mats, etc. As the nameindicates, it is the carrier of relapsing fcver or tick fever of man inAfrica. Thc tick hides and brccds in the cracKs, feeding at night. ThisFig. 1-( Upper left) Lanue of fowl tick under feathers of chicken.Fig. 9 (L'pper rij!ht)- Cnengorged male. Fig. 3 (Lower left)-FemaJe w' gs.Fig. 4 (Lower right)-Unengorged female.PLATE XX"I.species is peculiar in that it does not have an active sced tick stage,the first molt taking place within the egg shcll.The Spinose Ear Tick, Ornithodoros megnini (Dugcs) Neumann.­This is an Amcrican spccies. It is an important pest of live stock in thesemi-arid Southwestern United States and throughout Mexico. It alsooccurs in the cars of ccrtain wild animals and not infrcquently attacksman, producing severe earache. The tick normally attacks deep in theears of the host. The first or larval stage is very active. This is the•