124 
Annals of the Transvaal Museum. 
This tick lias also been found to be concerned in the transmission of 
East Coast fever. It is not a very common tick in the Transvaal. In. 
Cape Colony it extends for some distance into the Ivarroo. 
RHIPICEPHALU S SANGUINEUS. (LATREILLE.) 
The European Brown Tick. 
Ixodes sanguineus, Latreille (1804). 
Ixode plombe, Duges (1834). 
Ixodes duguessi, Gervais (1844). 
Ixodes rufus, Koch (1844). 
Rhip. sanguineus, Koch (1844). 
Rhip. limbatus, Koch (1844, 1847). 
Rhip. siculus, Koch (1844, 1877). 
Rhip. rubicundus, Frauenfeld (1867). 
Rhip. stigmaticus, Gerstacker (1873). 
Rhip. beccarri, Pavesi (1883). 
Phaulixodes ruf us, Berlese (1889). 
Rhip, sanguineus (Latreille) (Neumann, 1897). 
Plate VIII, figure e ; Plate IX, figure e ; Plate X, figures e, h. 
Male.— Body regularly enlarged from front to rear, 3.35 mm. long by 
1.55 mm. wide, often with a conical prolongation on the posterior end. 
Shield (VIII, e) reddish brown, covering all the dorsal surface 
except a narrow margin on the sides and posterior end; cervical 
grooves short ; a short median groove in the posterior part 
of the shield s on each side of which is a rounded pit ; punctua- 
tions unequal, fine ones numerous on all the surface, large ones very 
large and more numerous in the anterior portion of the shield ; marginal 
grooves well marked ; eleven rectangular, posterior festoons ; eyes pale* 
coloured, situated at level of posterior margin of coxae II. Rostrum with 
base wide, lateral angles projecting sharply ; palpi short and stout, articles 
I and II prolonged backward on their ventral surfaces ; inner margin of 
article I projecting inward ; articles I, II, and III each with a row of 
stout dental spines on the inner ventral margins ; process of inner- 
apophysis of mandible tridentate, outer apophysis bident ate, terminal tooth 
weak (X, k) • hypostome with six rows of teeth, with about, 
twelve teeth in a row. Ventral surface brownish in colour ; on 
each side of anus is an elongate triangular plate, the tip 
of which' extends to the level of coxae IY, the inner edge longer 
than the outer edge, base rounded (IX, e) ; a small spine outside of each 
of these plates ; stigmatic plates comma-shaped. Legs slender, dark brown 
in colour, coxae I bidentate, coxae II, III, and IV each with two spines on 
their posterior margins ; tarsi II, III, and IY terminated by two strong, 
consecutive’ spurs ; all the articles with numerous stiff hairs. 
Female. — Body elliptical, as wide, in front as behind,. often reaching a 
size of 11 mm. long by 7 mm. wide ; reddish brown or yellowish in colour. 
Dorsai shield (X, e) very small, longer than wide (about 
1.5 mm. long), lozenge oval in outline ; truncate in front to receive- 
