Mr. J. Owen, who furnished the 197 specimens froia a single 

 elephant in a plains herd passing through Lotti Forest, reported 

 that his "boys" could have collected at least twice as many from 

 this elephant if they had had more containers for them. No spec- 

 imens other than the few listed could be found on the three 

 other Equatoria Province elephants noted above. Numerous other 

 newly killed elephants in this Province have been examined with- 

 out finding ticks of any sort. 



DISEASE RELATIONS 



A. tholloni is possibly a vector of Nuttallia loxodontis 

 of elephants. 



RE>IARKS 



The stage to stage growth of A. tholloni has been charted 

 by C ampsjia-Roviget (195A) • Misshapen specimens have been described 

 and illustrated by Santos Dias (1947B,19A9C ,1955A). 



Larval and nymphal stages of A. tholloni were described and 

 illustrated by Santos Dias (1949D)T 



Variations in male scutal patterns from Mozambique were il- 

 lustrated by Santos Dias (19'^7A;. V/ithin the geographical range 

 of the elephant amblyomma there are two scutal color patterns, 

 one drab and lightly pigmented with small areas of color, the 

 other brightly marked, usually with more extensive pigmented areas. 

 The bright form is particularly common among numerous specimens 

 seen from West Africa and rare among those from East Africa; the 

 drab form is common in East African specimen and rare in West 

 African material. After having examined all of the numerous A. 

 tholloni specimens in British Museum (Natural History) collec- 

 tions, which represent almost all areas of the geographic range 

 of this species, one may only conclude that these two color 

 patterns do not appear to be genetic variants and are probably 

 not associated with temperat\are or rainfall factors or with 

 methods of preservation. They may possibly derive from nutri- 

 tional factors. A biological study of living specimens is the 



_ 257 - 



