124 



Annals of the Teansvaal Museum. 



Tliis tick has also been found to be concerned in the transmission of 

 East Ck^ast fever. It is not a very common ticlv in the Transvaal. In 

 Cape Colony it extends for some distance into the Karroo. 



EHIPICEPHALUS SAXGriXEUS. {LATREILLE.) 

 The Eueopean BEO^^x Tick. 



Ixodes saiH/uineus, Latreille (1801:). 

 I.vode ploinle, Duges (1834). 

 LrocJes (hu/uessi, Gervais (184-1:). 

 Lvodcs nifiis^ Koch (1844). 

 lihip. s/nujiiiiieus^ Koch (1844). 

 /////>. JiiHh((tus, Koch (1844, 1847). 



X/V/////X, Koch (1844, 187? ). 

 Ji/iiji. nihirididus, Frauenfeld (1867). 

 Jiliiji. si i(/iiuiticus, Gerstacker (1873). 

 Ji/iij). Ix'ccavri, Pavesi (1883). 

 rhanli.vodes nifiis, Berlese (1889). 

 Bliip. sanguineus (Latreille) (Xenmann, 1897). 

 Plate VIII, hgure e ; Plate PV, tigure e ; Plate X, figures e. k. 



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 on each side of which is a rounded pit ; punctua- 

 tions unequal, tine 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 ])osterior margin of coxae II. Rostrum, with 

 base wide, lateral angles projecting sharply ; palpi short and stout, articles^ 

 I and II prolonged backward on their ^ entral 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 bidentate, terminal tooth 

 weak {X, 1-) ; 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 tii>- 

 of which extends to the level of coxae IV, 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 lY each with two spines on 

 their posterior margins ; tarsi II, III, and IV terminated by two strong,, 

 consecutive spurs ; all the articles with numerous stiif hairs. 



Female. — Bodjj elliptical, as wide in front as behind, often reaching a 

 size of 11 mm. long by 7 mm. wide : reddish brown or 3'ellowisli 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- 



