139 



III and one pair behind coxae III. Legs slender, light yellowish m 

 colour ; tarsi very long and slender ; coxae I and II rectangular, coxae III 

 triangular, with apex inward and widely rounded. Base of rostrum 

 triangular on dorsal surface, with lateral angles sharp and prominent, 

 pentagonal on ventral surface ; palpi as in adult ; hypostome with two 

 rows of teeth on each half ; digits of mandibles as in female. 



J.drra (engorged).— 2 mm. long by 1.25 mm. wide, elongate, ellip- 

 tical ; sides parallel ; broadly rounded at both extremities, colour dark 

 .chestnut brown, shield same colour as body. 



Etjrjs. Length 0.75 mm., width 0.30 mm ; colour light chocolate 



brown^ surface smooth and shining. Towards hatching time a white spot 

 .appears, indicating region of the anus of embryo. 



Jjosfs. — Most warm-blooded animals, chiefly cattle, also horses, asses, 

 dogs, sheep, goats, ostriches, fowls, several species of the antelope, man, 

 ^ind found rarely on hares. It has also been taken from the following 

 wild animals : — Giraffe {Camelopardalis giraffa), the rhinoceros {Bliinoceros 

 lucerius), Lycaoii pictus in Cape C^dony, Boselaplius areas in British 

 East Africa ; buffalo, and elephant. 



JInhif'if. — Cape Colonv, Transvaal, Xatal, ^locambique, German East 

 Africa, British East Africa, Abyssinia, Congo. . 



This tick is most numerous along the southern and eastern coasts of 

 South Africa, and is seldom found on the high veld, except in cattle recently 

 brought up from the coast, although I have specimens collected at 

 Pretoria, Middelburg, and Tzaneen Estate (Zoutpansl)erg). It transmits 

 the disease known as heartwater to sheep and calves. 



AMBLYOMMA HEBBAEUM, var. EBUENEUM. {GEB8T ACKER). 



Am~blyo7nina elumemu, Gerstacker (1873). 

 AuMyoinma ehunieuin, Gerstacker (Neumann, 1891)). 



AiiiMyoinnia liehraeum, Koch, var. ehuriieuin (Gerstacker) (Neumann, 1904). 

 Male differs from the type as follows : — 



General ground colour of shield darker ; the anterior lateral bands 

 are wide throughout their entire length, and not attenuated at their 

 posterior ends ; they also plainly join the median transverse arched band ; 

 the posterior median line also joins the central transverse arched band ; a 

 transverse band joins the anterior longitudinal bands, although this 1)an(l 

 may be obsolete or nearly so ; all the dark coloured markings are much 

 stronger and wider than in Jiehrtieiini ; the rostrum is darker brown in 

 colour. 



Female differs from type as follows : — 



In formaline or alcohol the body is of a brownish to yellowi h "~reen 

 colour, while the type is always very dark, deep brown in colour. The 

 shield bears in its posterior median area an irregularly rounded ' ~)nt of 

 reddish grey, which is continued anteriorly in the median area by ^ a^'row 

 longitudinal greyish line just inside each cervical groove ; tlm^e b'^- ''lay, 

 however, be so Avide as to become confluent ; the anterior au'^-^ the 

 margin about the cervical emargination are also oTovish ^'^i r-l- - • the 



general colouration of the shield is of a lis-htei^ s^ni'le than ' ^. the 



rostrum is also of a lighter colour. Uneu'^-or^-ed fpmales -> are 



wider and fuller anteriorly than those of l}oiyrr.p.,..^ _ 



