the rainy season were infested by adult A. variegatum . The high 

 incidence of A. variegattun infestation and the absence of other 

 common ticks Ti'S' R. s. sinms , R. e. evert si , H. rufipes ) on the 

 tiang is of interesT. "Animals examTned immediately afx-er death 

 yielded, besides A. variegatum , only a few H. truncatum and B. 

 decoloratus . In Tpril, two pairs of R. tri^uspis and a female 

 of H. leachii muhsami were foojnd on one host and in July fotir 

 males and seven females of H. acicttlifer were removed from an- 

 other. The latter species also infested a tiang near Tonj (March). 



Also noteworthy is the fact that no ticks were found on a 

 ntunber of WATERBUCKS and WHITE-EARED KOBS in the Forest. Three 

 ROAN ANTELOPES were infested by (l) two male and a female H. 

 truncatum and the same number of A. variegatum (September )7 (2) 

 seven male and a female A. variegatum (August j, and (3) a male 

 H. truncatum and a nymphal A. variegatum (March). On a HARTEL 

 "BeEST shot in July, single "adults or A. variegatum and B. decolo - 

 ratus were found. An ORIBI obtained in June yielded a msile R. 

 tricuspis ; another, near Tonj in March, two male R. sulcatusT 



MAN 



Two pairs of advilt R. s. simus and nine nymphal A. variegatum 

 were taken engorging on memBers of our party in the P'orest in 

 Febmary. South of Yirol, a female R. sulcatus was taken while 

 crawling on the collector's leg. *" 



DOMESTIC FOVtLS 



A. persicus is common at Wau, the only locality in which a 

 searc'E for this tick has been made. 



DCMESTIC MAMMALS 



HORSES are attacked chiefly by B. decoloratus and R. e. 

 evertsi ; several collections from single hosts contain "as many 

 as sixty ticks of each species. One horse at Wau was infested 

 by twenty adult A. variegatum , another at Busseri by eleven 

 adults of this tTck as well as by three adult R. tricuspis , and 

 others by single males of H. rufipes. 



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