Diiring the 1951-52 visit for the present stiody in the Sudan, 

 R. appendiculatus was found to be still extremely numerous on aL. 

 most all cattle~In the Kajo Kaji area, and sttrprisingly common on 

 the Yei dairy herd in spite of a gammexane spray program in effect 

 there. In December of 1952, we also collected many specimens on 

 cattle at Yei. A careful watch for this tick in southern Sudan 

 is indicated, especially since a program for restocking areas from 

 which cattle have earlier been eradicated by the tsetse fly has 

 recently been undertaken. It is conceivable that this tick, if 

 unchecked, covild spread to the point where the value of the 

 entire program on the west bank of Bquatoria Province might be 

 severely jeopardized. 



DISTRIBUTION 



The brown ear-tick reaches its northern limit in southern Sudan 

 and somewhere in Ethiopia. From this level it extends to South 

 Africa, where, south of about Pretoria, it occurs only on the 

 coastal strip. Within this range, it is absent in deserts and in 

 areas without shrub cover. It is common in the Congo but most 

 probably absent or edmost entirely absent in West Africa. 



The range of R. a ppendiculatus has been mapped by the American 

 Geographical Society (1954; see also HIRATUM sheet). 



/ "WEST AFRICA ; NIGEEUA: Simpson (1912A) . Mettam's (1940) 

 remark apparently refers to Simpson's report. GOLD COAST: 

 Stewart's (1933) statement that this tick is common here requires 

 substantiation .7 



CpJTRAL AFRICA ; /"CAMHIGONS: Neumann (l91l). Rageau (1951, 

 1953A,B^ did not find this species in the Cameroons and it is 

 possible that Neumann's record is in error. FRMCH EQUATORIAL 

 AFRICA; Fiasson (1943B). Rousselot (1951) noted a single col- 

 lection from Oubangui— Chari but did not again report this record 

 (1953B)_.7 



BELGIAN CONGO and RUANDA-URUNDI (As R. nitens ; Newstead, 

 Dutton, and Todd 1907. Nuttall and Warburton 1916. Marcq 1924. 

 Seydel 1925. Schwetz 1927A,B,C, 1932, 1933A, 1934. Schwetz and 



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