Annals of the Transvaal Museum, 
139 
III, and one pair behind coxae III. Legs slender, light yellowish in 
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. 
Larva (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. 
Eggs. — 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. 
Hosts. — Most warm-blooded animals, chiefly cattle, also horses, asses, 
dogs, sheep, goats, ostriches, fowls, several species of the antelope, man, 
and found rarely on hares. It has also been taken from the following 
wild animals : — Giraffe (Camelopardalis giraff a), the rhinoceros (Rhinoceros 
lucerius), Lycaon pictus in Cape Colony, Boselaphus oreas in British 
East Africa ; buffalo, and elephant. 
Habitat. — Cape Colony, Transvaal, Natal, Mogambique, 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 (Zoutpansberg). It transmits 
the disease known as heartwater to sheep and calves. 
AMBLYOMMA HEBRAEUM, var. EBURNEUM. (GERSTACKER). 
AmUyomma eburneum, Gerstacker (1873). 
Amblyomma eburneum, Gerstacker (Neumann, 1899). 
AmUyomma liebraeum, Koch, var. eburneum (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 band 
may be obsolete or nearly so ", all the dark coloured markings are much 
stronger and wider than in liebraeum ; the rostrum is darker brown in 
colour. 
Female differs from type as follows — 
In formaline or alcohol the body is of a brownish to yellowish green 
colour, while the type is always very dark, deep brown in colour. The 
shield bears in its posterior median area an irregularly rounded spot of 
reddish grey, which is continued anteriorly in the median area by a narrow 
longitudinal greyish line just inside each cervical groove • these lines may, 
however, be so wide as to become confluent ; the anterior angles and the 
margin about the cervical emargination are also greyish in colour ; the 
general colouration of the shield is of a lighter shade than in hebraeum, the 
rostrum is also of a lighter colour. ITnengorged females of eburneum are 
wider and fuller anteriorly than those of hebraeum. 
