142 



Ax^fALS OF THE TrANSVAAL MuSEUM. 



it is the same colour as in earlier stages, but later it becomes nutmeg brown. 

 Tlie 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. 



j^yiupJi. — Body brownish, 2 mm. long (rostrum included), the shape of 

 a young female. Shield without metallic reflections, reddish brown, i^oxae- 

 with spines scarcely visible ; no tarsal spines. 



Larva.- — Body oval, swollen, 0.7 mm. long. 



Hosts. — Cattle principally, but also horses, goats, rhinoceros (Mocam- 

 bique, German East Africa, Abyssinia), zebra, and sheep. 



Habitat. — Abyssinia, Zanzibar, Madagascar, Mauritius, Senegal, Congo, 

 Ivory Coast, Sierra Leone, Eiver Xiger, River Zambesi, Transvaal, Cape 

 Colony, Manicaland (Rhodesia), German East Africa, Mocambique, Angola,, 

 Togo_. Guinea. 



fjife History. — Xever reared in Transvaal, but Lounsbury luis tried 

 and found that it was practically the same as .i. hehraeiun. It always 

 leaves the host to moult. This tick is very closely related to lipbraeum. 

 It is confined, however, mostly to tropical Africa, and is only occasionally 

 taken in South Africa. It has l)ecome naturalised in Guadaloupe Islands,, 

 where it seems to have been taken from Senegal. 



AMBLYOMMA MARMOREUM. KOCH. 

 The Tortoise Tick. 



A iiibt yoni Ilia ma riiioreunK Koch (1844, 1847). 

 II yaloiii ma drriiim, Koch (1844, 1847). 

 Amldynm ma deriam (Koch) (Xeunuinn, 181)!)). 

 Amitlyom ma rugosum, Xeumann (1899). 

 Amhtyomma marmoreum, Koch (Xeumann, 1901). 

 Pt(rt(> XII, figures m, ii ; Ft ate XIII, figures e 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, tb.e 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 distinctly ; anteriorly it is indicated by a row 

 of punctuations more or less regular ; general colour light grey, w4th a 

 metallic copper tinge, and with dark brown spots as follows : Two narrow 

 bands on the cervical grooves ; behind these tv^o 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, flat, 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 



