Annals of the Transvaal Museum. 
152 
of false articulation, the bosses of tarsi not pronounced a small terminal 
spur. 
Nymph. — Body broadty oval ; widely rounded at both extremities 
almost as wide as long, unengorged 1 mm. (without rostrum), engorged 2.3 
mm. long by 2 mm. wide (with rostrum) ; colour light yellowish, almost 
translucent. /Shield {XV, g) heart shaped, as wide as long, broadly rounded 
at posterior angle, postero-lateral edges slightly concave, antero-lateral 
edges, colour light yellowish with reddish eye-like spot in each antero-lateral 
angle ; cervical emargination deep, no cervical grooves ; no punctuations. 
Dorsal surface with a median and two lateral grooves, all three long and 
straight ; festoons veil marked. Ventral surface same colour a's the dorsal 
anus at the posterior third ; coxal grooves widely divergent behind ; anal 
groove semi-circular, opening in front ; ano-marginal groove long and 
distinct ; festoons present ; stigmatic plates almost circular, slightly 
elongate on postero-lateral edge. Rostrum small, slender ; base nearly 
triangular on dorsal surface, rectangular ; ventral surface slightly wider than 
long • hypostome with numerous small denticles at the tip, then two rows 
of three teeth each, followed by two series of teeth on each half, consisting 
of six teeth in each series ; mandibles {XV, i) with inner apophysis of digit 
slender, and bearing a lunate process near its tip, the extremities of which 
are sharp and extend outward, the outer apophysis bears four teeth, the two 
lower very large, the two anterior very small ; palpi elongate, excavated on 
inner edge ; article I very short and wide ; article II constricted at base,, 
and twice as long as article III ; article IY as in male, only a little larger 
proportionately. Legs short and thick, light yellowish in colour ; tarsi I 
very long ; all tarsi gradually attenuated at their extremity ; no spurs- 
present ; coxae (XV, e) rather elongate, coxae I with a short spine on its 
posterior median angle ; coxae II, III, and IY with a short blunt spine on 
the middle part of the posterior edge. 
Larva. — Body short, nearly circular in outline, unengorged 0.8 mm. 
wide by 1 mm. long, including rostrum ; engorged 1.3 mm. long, including 
rostrum, by 1 mm. wide ; colour yellowish brown (almost colourless). Shield 
same colour as body, heart shape, posterior angle broad, surface finely 
reticulated, cervical grooves deep, concave outward, no marginal grooves, 
at each antero-lateral angle a light reddish eye-like spot. Dorsal grooves 
and festoons faintly marked. Ventral surf ace same colour as dorsal ; anus 
at posterior fourth of length ; anal groove semi-circular, other grooves only 
faintly marked ; three pairs of stigmatic plates, one behind each coxa. 
Rostrum similar to that of exornatum ; mandibles with inner apophysis 
bidentate, outer apophysis with four teeth ; hypostome spatulate ; several 
denticles at tip, then two rows on each half of three teeth each, followed 
by five or six rows of large teeth, two teeth on each half to a row ; palpi 
slender, article I short, articles II and III about equal in length. Legs: 
very slender and light coloured ; coxae each with a sharp spine on their 
posterior margins. 
Hosts. — Black snake (Cape Colony), Mamba ( Dendraspis angusticeps- 
(Transvaal), and other snakes. Both adults, nymphs, and larvae have been 
found on snakes. 
Distribution . — Cape Colony (Adelaide), Transvaal, Mozambique. 
