128 
Annals of the Transvaal Museum. 
RHIPICEPHALUS APPEKDICELATUS. -NEUMANN. 
The Brown Tick. 
Rhipicephalus appendiculatus, Neumann (1901). 
Plate VIII, figure d ; Plate IX, figure d ; Plate X, figure d ; 
Plate XI, figures b, d, g, i, fa 
Male. — Oval in outline, twice as wide at the posterior third as in 
front ; 3 to 4 mm. long ; reddish brown in colour. Shield (VIII, d) bordered 
by the body on the sides and behind ; of a dark brown colour ; a deep 
marginal groove limiting the last festoon ; cervical grooves very wide and 
short, but not very deep ; punctuations unequal, the small ones very 
numerous and superficial but quite apparent, the large ones rare and nearly 
all anterior, a few continue the marginal groove anteriority from the eyes ; 
a space on each side near the middle of the length, where there are almost 
no punctuations ; posterior festoons twice as long as wide, except the 
extreme ones which are small and square or triangular ; all festoons 
continued into the margin of the body, the median is prolonged into a 
narrow’ tail twice as long as wide, truncate at tip ; in front of festoons are 
three longitudinal grooves, wide and short, the median a little' the longest ; 
eyes flat, reddish in colour ; dorsal porose areas near the middle of the length. 
Ventral surface almost glabrous, punctured, anal plates triangular (IX, d), 
inner edge longer than outer, giving them the appearance of being pointed 
at both ends ; punctuations deep ; accessory plates lacking or very small. 
Rostrum with base relatively long, the lateral angles near the anterior third 
of the length, posterior angles prominent ; several large punctuations on 
dorsal surface of base ; palpi short and thick, articles angular on their 
outer edges, articles I and II prolonged backward on the ventral side ; 
mandibles with process of inner apophysis transverse and bidentate on inner 
edge, outer apophysis with two teeth, the terminal tooth small. Legs with 
coxae II, III, and IY, each with two teeth on their posterior margins, legs 
IY flattened dorso-ventrally ; tarsi II, III, and IY terminated by two con- 
secutive ventral spurs. 
Female. — When young, body oval, flat, reddish brown in colour ; when 
engorged body becomes elliptical, swollen, thick and almost as wide at each 
end, often reaches a length of 11 mm. and a width of 7 mm. Dorsal shield 
(X, d) an oval lozenge in shape, with sides slightly sinuous, rounded at 
angles ; almost as wide as long ; marginal grooves well formed, hut 
not very deep ; punctuations numerous, unequal, mostly very fine 
and superficial, the remainder large, few in number, and scattered ; 
punctuations less numerous in an area on each side at about the 
middle of the length of the shield ; eyes large at the middle of 
the length of the shield. Integument of dorsal surface ordinarily 
provided with thinly distributed hairs, more abundant on the 
ventral surface ; when young, numerous punctuations on the dorsal 
surface; a marginal groove on each side; three longitudinal grooves; 
eleven quadrangular posterior festoons ; integument often so thin as to 
allow, ramifications of the intestines to show through when fully 
engorged ; two anterior and three posterior grooves ; dorsal porose areas 
in the anterior half of the length of the body, stigmatic plates oval, with a 
short postero-dorsal prolongation. Rostrum with base widened into 
prominent angles ; palpi comparatively smaller than those of the male, but 
more elongate; first three articles bear three projections on their inner 
