810 REPORT OF THE HARVARD AFRICAN EXPEDITION 
1911, ‘Das Tierreich, Lief. 26, Acarina, Ixodidae,’ p. 102, fig. 48 (#7 9). C. W. Howard, 1908, 
Ann. Transvaal Mus., I, 2, p. 157, Pl. XVI, figs. o-p (oc 9). Nuttall, 1916, Bull. Ent. Res., VI, 
4, p. 321, figs. 14-15 (@ ¢) (Not Acarus rhinocerotis de Geer). 
Beician Conco.— Northeastern Uele, several males and females, off white 
rhinoceros, Ceratotherium simum cottoni Lydekker (J. Rodhain). These speci- 
mens are part of a lot identified by Professor Nuttall as D. rhinocerinus, in the 
collections of the Congo Museum at Tervueren. They are colored like the 
typical form of the species. 
TANGANYIKA TERRITORY.— West side of Mt. Longido, January 11, 1916, 
without host (Arthur Loveridge). 
Dermacentor circumguttatus Neumann 
Dermacentor circwmguttatus Neumann, 1897, Mém. Soc. Zool. France, X, p. 374, fig. 27 (co 2; 
Congo and Upper Ubangi); 1911, ‘Das Tierreich, Lief. 26, Acarina, Ixodidae,’ p. 102 (% @). 
Nuttall, 1916, Bull. Ent. Res., VI, 4, p. 321, fig. 18 (# 9). 
Liperta.— Paiata, one male and two females, off elephant, Loxodonta 
africana cyclotis (Matschie). 
BELGIAN Conco.— Ingerosa near Irumu, one male, off Loxodonta africana, 
May 24, 1927 (R. P. Strong). Semliki Valley, near old Beni, off elephant, 
May 18, 1927 (R. P. Strong). Karibumba near Beni, off Loxodonta africana, 
March 21, 1927 (H. Coolidge). 
This tick is known from many localities in the Belgian Congo (J. Schwetz, 
1927, Rev. Zool. Afric., XV, 1, p. 91). It appears to be strictly West African 
and much less widely distributed than the other elephant tick, Amblyomma 
tholloni. 
Of Dermacentor, only one species (D. circumguttatus) is known from Liberia. 
Two occur in the Belgian Congo: D. circumguttatus and D. rhinocerinus. 
The genus Rhipicentor seems to be more closely related to Dermacentor 
than to Rhipicephalus. Only one species has been found in the Belgian Congo: 
R. gladiger (Neumann) (Rhipicephalus gladiger Neumann = Rhipicentor bicornis 
Nuttall and Warburton). None has as yet been reported from Liberia. 
Haemaphysalis parmata Neumann 
Haemaphysalis parmata Neumann, 1905, Arch. de Parasitologie, IX, p. 228 (#9; off cattle, 
sheep, goat and pig, Cameroon); 1911, ‘Das Tierreich, Lief. 26, Acarina, Ixodidae,’ p. 109 
(2). Nuttall and Warburton, 1915, ‘Ticks, Part III, Haemaphysalis,’ p. 418, figs. 350-353 
(o 9, nymph and larva). Nuttall, 1916, Bull. Ent. Res., VI, 4, p. 320, figs. 11-12 (¢# 9). 
BELGIAN Conco.— Ruchuru Plains, several females off bushbuck, T'ra- 
gelaphus scriptus (Pallas), April 4, 1927 (R. P. Strong). Bumba, one male off 
Dorcatherium aquaticum cotton Lydekker, January 6, 1927. 
There are several previous records of this species from the Belgian Congo 
(Kasongo; Kimaka; Beni; and Kibombo). 
Haemaphysalis leachii (Audouin) 
Ixodes leachti Audouin, 1827, in Savigny, ‘Descr. de l’Egypte,’ 2d Ed., XXII, Zool., p. 428 (3; 
Egypt); [1826, Atlas, Pl. IX, fig. 9; without name]. 
