ENTOMOLOGY 799 
with six species, has been found only in the coastal forest belt of Upper Guinea, 
in Sierra Leone, Liberia, Dahomey (formerly Togo), Cameroon, and Rio Muni 
(Rio Benito).! It is one of the few faunal elements which Upper Guinea has 
in common with the Neotropical Region. The distribution of the living 
Ricinulei is therefore analogous to that of the Rapataceae, a family of mon- 
ocotyledonous plants of South America, represented in Liberia by one genus, 
Maschalocephalus. 
ACARINA 
IXODIDAE 
Ixodes rasus Neumann 
Ixodes rasus Neumann, 1899, Mém. Soc. Zool. France, XII, p. 137, figs. 12-14 ( # 9; off Procavia, 
Congo); 1911, ‘Das Tierreich, Lief. 26, Acarina, Ixodidae,’ p. 26 (#9). Nuttall and War- 
burton, 1911, ‘Ticks, Part II, Iwodes,’ p. 228, figs. 224-226 (#9). Nuttall, 1916, Bull. 
Ent. Res., VI, 4, p. 318, figs. 7-8 (0 9); 1916, Parasitology, VIII, p. 331. 
TANGANYIKA TERRITORY. — Tanga, several females off a species of Cephal- 
ophus (Arthur Loveridge). 
This species has a rather wide distribution, being recorded from the Gold 
Coast, Togo, Cameroon, French Congo, Belgian Congo, Uganda, and Tan- 
ganyika Territory. Its hosts include man, cattle, dog, leopard, Procavia, Ich- 
neumon, Aulacodus, as well as the okapi (Okapia johnstoni Sclater: specimens 
obtained by Dr. H. Schouteden at Koteli, on the Itimbiri). 
Ixodes pilosus C. L. Koch 
Ixodes pilosus C. L. Koch, 1844, Arch. f. Naturgesch., X, 1, p. 233 (¢; South Africa); 1847, 
‘Uebersicht des Arachnidensystems,’ IV, p. 105, Pl. X XI, fig. 79 ( ¢). Donitz, 1910, Denkschr. 
Med.-Naturw. Ges. Jena, XVI, p. 435, Pl. XVII, fig. 1, Pl. XVI0, fig.6(% ¢). Neumann, 1911, 
‘Das Tierreich, Lief. 26, Acarina, Ixodidae,’ p. 24 (o% ?). Nuttall and Warburton, 1911, 
‘Ticks, Part II, Ixodes,’ p. 221, figs. 217-221, and p. 316 (¢@ 9, nymph and larva). 
TANGANYIKA TERRITORY.— Nyingwa, Uluguru Mts., several males and 
females off a duiker, Cephalophus melanorheus schiisteri Matschie, October 
15, 1926 (Arthur Loveridge). 
This tick is mainly South African and occurs on a variety of wild and do- 
mestic animals. In South Africa it is known as the ‘‘paralysis tick,’’ because 
it produces paralysis in sheep. This disease is as yet of obscure etiology, but 
probably due to a toxin injected by the tick into the blood of the host. At 
any rate animals usually recover after the ticks have been removed. 
Ixodes sp. 
Nymphs of a species of /xodes were collected by Mr. Arthur Loveridge, 
from the arm-pits of a golden mole, Chrysochloris tropicalis G. Allen and Lov- 
eridge, at Bagilo, Uluguru Mts., Tanganyika Territory, October 4, 1926 (re- 
1 Hansen and Sorensen wrongly place Rio Benito in the ‘‘Congo,” whereas it is on the Atlantic 
Coast, close to the southern border of Cameroon. There is no record of Ricinulei having ever been taken 
im the Congo Basin. 
