the same as those listed for R. s. simus (page 7^3). The writer's 

 experience in other parts of IJenya in general confirms Roberts* 

 findings. However, Roberts observed that nests of Mastonys (= Mus ) 

 coucha near the surface of the ground rather than deeper nests are 

 preferred by H. leachii, but I do have numerous records from deep- 

 er nests of grassrats. This factor also requires fvirther study 

 (See R. s. simus , page 7iV6). It is of some interest to note that 

 all specimens that have been reared in our laboratories from nymphs 

 from rodent nests in Kenya, the Sudan, and Egypt have been sub- 

 species leachii . 



The chalcid wasp parasite Hunterellus hookeri has been bred 

 from nymphs in South Africa (Cooley 1929, 193A^. This subject is 

 further discussed vinder R. s. sanguineus (page 710), 



DISEASE REIATia^S 



MAN: Boutonneuse fever (Rickettsia conorii ). 



Experimental evidence indicates efficiency as a vector of 

 Rocky Moxontain spotted fever (Rickettsia rickettsii ). 



MAN AND ANIMALS: Qi fever (Coxiella burnetii ). 



DCMESTIC DOGS: Canine babesiosis (Babesia canis ). 



?DCMESTIC GATS: Feline babesiosis (Nuttallia felis ). 



?JACKALS: Ganine babesiosis (B. canis ) . 



RMARKS 



k gynandromorph of H. leachii (probably subspecies leachii ) 

 has been described and illustrated by Santos Dias (1953C7^ The 

 misshapen specimen of H. leachii described and illustrated by 

 Nuttall (19LAA), and widely quoted by subseqixent authors, refers 

 to the Asiatic subspecies indica Warbvirton, 1910. Very slightly 

 misshapen specimens, due to injury, of both African subspecies 

 have been described and illustrated by Santos Dias (1955A) . The 

 measurements and increase in relative size from stage to stage 

 have been staadied by Campana-Rouget (195^) , apparently from data 

 in Nuttall 's Monograph. 



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