and Arabia follows the same pattern. The details have been best 

 worked out by Roberts (1935) (also noted by Kauntze 193A^) who foiond 

 the immature stages in the Nairobi area in nests of the following 

 rodents: grass rats or kusu, Arvicanthis sp.; groove-toothed rat, 

 Otomys sp.; striped grass mouse, Lemniscomys sp.; four-striped 

 grass mouse, Rhabdomys pumilio ; and raultiraammate rat, Mastomys 

 (= Mus ) coucha. 



In the Sudan, some larvae and many nymphs were taken on the 

 same types of animals mentioned by Roberts and also on gerbils, 

 Tatera b. benvenuta . Engorging specimens were taken on these 

 animals''trapped away from their nest. We also took a single 

 nymph from two different kinds of hares in two localities but 

 it seems that hares should be considered as exceptional hosts 

 for immature stages. In Northern Rhodesia, Matthysse (195A-) 

 also reports larvae from hares. 



British Museum (Natural History) collections contain a nymph 

 from another probably exceptional host, a ground squirrel Fermos- 

 ciurus sp., collected by Karl Jordan in Southwest Africa. A breaks 

 down of collections of immature stages from South Africa in the 

 Onderstepoort collection (Theiler, correspondence) shows that 

 nine are from hares, two are from springhaas, five from hyraxes, 

 one from ground squirrel; 125 from the following genera of raurid 

 rodents: Aethomys (56), Rhabdomys (2A) , Lemnisconys , Mastomys , 

 Thallomys , Arvicanthis , Rattus, and Mus; and forty from the 

 following cricetid rodents: Otonys (35), l^otomys , Parotonys , 

 Tatera and Gerbillus . 



Other reports of immature stage hosts are short-haired rats, 

 Praomys sp. for larvae (Bedford 1932B) and Praomys jacksoni for 

 nymphs during the dry season around Leopoldville (Wanson, Richard, 

 and Toubac 19A7), and an elephant shrew for a nymph "probably of 

 this species" in Kenya (Lxmsden 1955). 



Exceptional hosts of iramattire stages in the Onderstepoort 

 collection (Theiler, unpublished) are three elephant shrews and 

 one Crocidura shrew (insectivores) , one hartebeest, one mongoose, 

 and one mierkat . Also included are three birds from the region 

 of the Sabi^Lundi Function, Southern Rhodesia, the puff-back 

 shrike, Dryoscopus cubla, the blue- breasted waxbill, Uraeginthus 



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