Annals of the Transvaal Museum. 
101 
Female (unengorged) . — Body Tat, oval, widest opposite coxae 
IV, truncate on posterior margin; deep chestnut brown in colour; 
4.5 mm. long (rostrum not included), 3 to 3.5 mm. wide. Shield. oval, 
almost hexagonal, glabrous, as wide or a little wider (2.5 mm.) than 
long, the posterior margin convex, the postero-lateral margins 
concave, antero-lateral margin convex; cervical grooves deep, narrow, 
and converging* at first, then wide, superficial and diverging behind ; 
marginal grooves lacking; represented by a raised margin; eyes 
black, hemispherical, shining, near* ' the lateral angles in deep, sub- 
marginal pits ; cervical emargination shallow ; punctuations very 
unequal. Dorsal surface, (F, e) with three longitudinal grooves, ihe 
lateral divided into two unequal branches at the margin close to lire 
edge, eleven caudal festoons ; large transverse folds and pits between 
the dorsal grooves ; short whitish hair on all the surface, two dorsal 
porose areas, one on each side and close to the median line, just 
caudad of the shield, small and dark coloured. Ventral surface, 
with similar hairs and a few medium-sized punctuations; sexual pore 
narrow, opposite coxae II ; anus near posterior third ; ano-margmal 
groove present ; a short groove on each side of it ; stigmatic plates 
large, dark chestnut coloured, triangular, almost as wide as long, 
angles rounded, postero-lateral angle projecting laterally. Rostrum 
similar to that of male except that it is slightly longer (1.5 mm.), 
and possesses the porose areas, which are elongate, elliptical, and not 
very deep; the mandibles differ from those of the male as follows: 
inner apophysis slightly recurved and sharp at the tip, not far from 
the extremity is borne a transverse process with three sharp teeth,; 
the outer apophysis has a wide base, and bears three teeth, the 
anterior of which is very small, the other two are large and strong ; 
liypostome and palpi like those of the male. Legs like those of vhe 
male ; coxae like those of the male except that they are not contiguous. 
Wh en fully engorged the female may attain a size of 20 mm. 
long* by 18 mm. wide, and almost as thick as wide, sides almost 
parallel, glabrous, or almost so. Colour chestnut brown, lighter 
than that of shield, sometimes whitish before complete engorgement, 
often the marginal groove appearing as a whitish line. Hairs and 
grooves disappear when fully engorged, previous to that stage the 
anterior grooves appear on the dorsal surface and diverge behind. 
Nymph. — Body short, oval, more or less swollen, of a colour 
varying from yellowish white to chestnut brown, 2 to 4 mm. long. 
Shield similar to that of female. Stigmatic plates small, nearly 
circular. 
Hosts. — All domestic animals, including horse, mule, ass', sheep, 
antelope, deer, dog, cat, man, dromedary, camel, ox (the last three- 
by preference), and the following wild animals : giraffe, reed buck, 
and wild boar. They prefer the regions of the genitals. 
Distribution. — Algeria, Tunis, Morocco, Tripoli, Tenerilfe,. 
Egypt, Abyssinia, Asia Minor, Persia, Afghanistan, Turkestan, 
China, India, Mongolia, Senegal, German East Africa, Mozambique,, 
Somaliland, Natal, Cape Colony, Orange River Colony, Transvaal,. 
Walfish Bay, Greece, Crete, Sicily, Sardinia, Italy, Southern France,. 
Spain, Portugal. 
