142 
Axnals of the Trahsvaal Museum. 
it is the same colour as in earlier stages, but later it becomes nutmeg brown.. 
The body is at first rectangular., with rounded angles, and faces only a 
little convex, then it becomes more and more swollen ; coxae very distant 
no grooves or festoons. 
Nymph. — Body brownish, 2 mm. long (rostrum included), the shape of 
a young female. Shield without metallic reflections, reddish brown. Coxae- 
with spines scarcely visible ; no tarsal spines. 
Larva— Body oval, swollen, 0.7 mm. long. 
Hosts. — Cattle principally, but also horses, goats, rhinoceros (Mozam- 
bique, German East Africa, Abyssinia), zebra, and sheep. 
Habitat, — Abyssinia, Zanzibar, Madagascar, Mauritius, Senegal, Congo, 
Ivory Coast, Sierra Leone, River Niger, River Zambesi, Transvaal, Cape 
Colony, Manicaland (Rhodesia), German East Africa, Mozambique, Angola,, 
Togo, Guinea. 
Life History. — (Never reared in Transvaal, but Lounsbury has tried’ 
and found that it was practically the same as A. liebraeum. It always; 
leaves the host to moult. This tick is very closely related to liebraeum. 
It is confined, however, mostly to tropical Africa, and is only occasionally 
taken in South Africa. It has become naturalised in Guadaloupe Islands,, 
where it seems to have been taken from Senegal. 
AMBLYOMMA MARMOREUM. KOCH. 
The Tortoise Tick. 
Amblyomma marmoreum , Koch (1844, 1847). 
Hyalomma devium, Koch (1844, 1847). 
Amblyomma devium (Koch) (Neumann, 1899). 
Amblyomma rugosum , Neumann (1899). 
Amblyomma marmoreum , Ivoch (Neumann, 1901). 
Plate XII, figures m, n ; Plate XIII, figures c to k. 
Mate. — Body oval, reaching 8.5 mm. long (not including rostrum), by 
7 mm. wide. Dorsal shield (XIII, c ) a little convex, punctuations, 
unequal, fine ones very numerous and very fine, the others 
very large, scattered, showing granulations at their bottoms 
cervical grooves narrow and deep ; marginal groove deep at a 
distance from the margin, beginning about at level of coxae III,, 
and contouring the posterior margin, where it forms the anterior 
margin of the festoons very distinct^ ; anteriorly it is indicated by a row 
of punctuations more or less regular ; general colour light grey, with a 
metallic copper tinge, and with dark brown spots as follows : Two narrow 
bands on the cervical grooves ; behind these two rectangular areas; 
separated behind, but joined in their middle by a transverse line in the 
posterior third ; three bands converging in front, enlarged, or not in their 
anterior extremity, on the marginal cushion, in front of the festoons, three' 
to five successive spots, the anterior of which borders on the outer edge 
of the eye ; the festoons bordered with brown on their inner edges. Eyes- 
large, fiat, yellowish. Ventral surface light greyish in colour, the festoons 
marked by brown spots and grooves of separation ; a dark line anterior 
of median, and festoons second from median ; stigmatic plates triangular ; 
postero-lateral angle prolonged laterally. Rostrum rather short, dark 
coloured, base small, rectangular on posterior margin ; metallic spot on? 
