HYRApOIDEA (HYRAXSS) 



FAI4ILY PRCCAVIIDAE 



HCTEROHYRAX BRUCEI HOOGSTRAALI Setzer, 1956. Hoogstraal»s Laxge- 

 toothed Rock Hyr ax . 



This is the common hyrax of rocky outcrops in the plains east 

 of the Nile and some twenty were examined. Thirteen larvae and a 

 female A. brumpti infested three specimens at Iraurok and Imatong. 

 Eleven adults and a nymph of the East African hyrax tick, H. 

 bequaerti, were also attached to the two Imurok specimens as 

 well as a single male R. s. sanguineus . Twenty-one immature 

 R. ?sp. were also foun3 on these hyraxes; these latter may 

 prove to be R. ?distinctus. Elsewhere in Torii. and Juba Districts 

 no ticks occurred on these hyraxes. 



PROCAVIA HABSSSINICA SLAT INI Sassi, 1906. Slatin«s Rock Hyrax. 



In western Juba District and west of the Nile, Slatin's 

 rock hyrax is common. A single male R. ?distinctus was taken 

 at Rejaf and seven male H. bequaerti at Lui. Both ticks are 

 specific on hyraxes. ~ 



PERISSODACTYLA (ODD-TOED UNGULATES) 



FAMILY RHINOGEROTIDAE 



CEF-ATOTHERIUl-I SWm COTTONI (Lydekker, 1908). Northern Squara- 

 lipped or White Rhinocero s . 



DIG EROS BIG CRN IS SaiALIENSIS (Potocki, 1900). Somali Black 

 Rhinoceros . 



No ticks from either of these animals are available from 

 the Sudan and none were examined for ectoparasites during the 

 present investigation. The white rhinoceros occurs only west 

 of the Nile and the black rhinoceros only east of the Nile though 

 stragglers of the latter are reputed rarely to be seen west of 

 the Nile. It is probable that the Sudan specimens of A. rhinou . 

 cerotis and D. rhinocerinus from both Equatoria and BaEr El Ghazal 

 Provinces, all foiand on grass, were associated with these animals. 



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