SOS REPORT OF THE HARVARD AFRICAN EXPEDITION 
Rhipicephalus aurantiacus Neumann 
Rhipicephalus aurantiacus Neumann, 1907, Notes Leyden Mus., XXIX, p. 90, figs. 3-4 (o% 9; 
Liberia); 1911, ‘Das Tierreich, Lief. 26, Acarina, Ixodidae,’ p. 41(¢ 9). 
Liperta.— Miamu, several females and males, off bush-cow, Syncerus 
nanus (Boddaert), August 31, 1926. Moala, off leg of man, November 1, 1926. 
This tick is known from Liberia and the Belgian Congo (Medje). 
Rhipicephalus pulchellus (Gerstaecker) 
Dermacentor pulchellus Gerstaecker, 1873, in v. d. Decken’s ‘Reisen in Ost-Afrika,’ III, 2, Glieder- 
thiere, p. 467, Pl. XVIII, fig. 2; Aruscha, Uru and Lake Jipe, Tanganyika Territory). 
Rhipicephalus pulchellus Neumann, 1897, Mém. Soc. Zool. France, X, p. 399, figs. 33-34 (7 2); 
1911, ‘Das Tierreich, Lief. 26, Acarina, Ixodidae,’ p. 48, fig. 23 (oc @). Warburton, 1912, 
Parasitology, V, p.17. Cunliffe, 1913, loc. cit., VI, pp. 204-216, figs. 3-6 (% 9). 
Rhipicephalus marmoreus Pocock, 1900, Proc. Zool. Soc. London, p. 50, Pl. III, figs. 1-1ld (07; 
Bularli, West Somaliland). 
Rhipicephalus maculatus Neumann, 1901, Mém. Soe. Zool. France, XIV, p. 273 ( ¢; not the %). 
TANGANYIKA TERRITORY.— West side of Mt. Longido, several males, with- 
out host, January 11, 1916 (Arthur Loveridge). I have also seen specimens 
obtained off zebra in East Africa. 
Kenya Cotony.— Ithanga Hills, near Lake Naivasha, several males and 
females, off buffalo, Syncerus caffer (Sparrman) (W. R. Zappey.) 
This tick appears to be restricted to Northeastern Africa (Abyssinia, Uganda, 
Kenya Colony, Somaliland, Zanzibar, and Tanganyika Territory), where it is 
known from a variety of hosts. 
Rhipicephalus plumbeus (Panzer) 
Acarus plumbeus Panzer, 1795, ‘Fauna Insect. Germanica,’ Fase. 90, Pl. XXII (nymph; off 
Alauda trivialis, Germany). 
Rhipicephalus plumbeus Neumann, 1911,‘ Das Tierreich, Lief. 26, Acarina, Ixodidae,’ p. 46 (nymph). 
Rhipicephalus sp.? Neumann, 1897, Mém. Soc. Zool. France, X, p. 414, fig. 43 (nymph). 
LiBERIA.— Banga, several nymphs off a yellow wagtail, Budytes flavus 
(Linnaeus), October 24, 1926. 
This tick occurs frequently as nymph on a variety of birds in Europe and 
North Africa. Its occurrence in West Africa is evidently due to the migrating 
habits of the wagtails. Kelso (1908, The Zoologist, LXI, p. 155) records a 
wagtail, caught on board ship in the Red Sea, with several ticks attached to its 
head. The specimens which I collected were attached to the side of the neck, 
where they caused a marked inflammation of the skin. The adult stage of this 
tick is as yet unknown, but is perhaps Rhipicephalus bursa Canestrini and Fan- 
zago, which has slightly projecting, hemispherical eyes. 
Only six species of Rhipicephalus are at present known from Liberia: R. 
sanguineus (Latreille), &. zemanni Neumann, R. longus Neumann, R. cuncatus 
Neumann, FR. awrantiacus Neumann, and R. plumbeus (Panzer). In the Belgian 
Congo, however, the genus is abundantly represented by some seventeen species: 
R. appendiculatus Neumann, R. aurantiacus Neumann, R. bursa Canestrini 
and Fanzago, R. capensis C. L. Koch (with var. compositus Neumann), R. com- 
