Annals of the Transvaal Museum. 
103 
oval; length (with rostrum) 1.5 mm., width 0.9 mm.; colour, bluish 
grey. Shield, covering anterior half of body, wider than long; 
antero-lateral margins convex, postero-lateral margins concave ; 
posterior angle broadly rounded ; cervical emargination shallow ; 
cervical grooves widely separated, very distinct, first convex, then 
straight to postero-lateral edges; surface divided into polygonal areas 
by shallow grooves — no punctuations; eyes very large, hemispherical, 
dark coloured, shining, in orbits at lateral angles; colour light 
yellowish brown, varying in depth of colour and sometimes with 
darker spots. Dorsal surface (T, i) with short whitish hairs; three 
.grooves, median straight, lateral concave, facing inward, all extending 
from shield to caudal margin; laterals join cervical grooves of shield. 
Ventral surface (V, k) same colour as dorsal, and hairs same; 
stigmatic plates large, almost circular, and whitish in colour. 
Rostrum light yellowish, base wider than long, pointed sharply at 
lateral edges so as to appear broadly triangular ; palpi elongate ; 
article II more than twice as long as article III; mandibles like those 
of the female ; hypostome spatulate, two rows of teeth on each half, 
teeth large, strong and sharp. Legs stout, pale, yellowish in colour, 
with numerous long whitish hairs ; coxae rectangular ; coxae, each 
bearing' two blunt teeth on their posterior margin, those on coxae I 
sharp. 
(Engorged) Colour from light yellowish to dark bluish, paler 
about shield and on margins. Body elliptical, sides parallel, length 
4.5 to 6 mm., width 3 to 4 mm. Shield becomes a uniform chestnut 
brown. Integument of dorsal and ventral surfaces, with numerous 
irregular-shaped papillae, larger near the posterior end where they 
are often confluent. Coxal grooves begin opposite coxae II, approach 
each other anterior of anus, and then sharply diverge. Ano-marginal 
groove present. On dorsal surface two anterior diverging grooves, 
three posterior grooves, median longest, laterals concave near caudal 
end. 
Larva (unengorged). — Body elongate, oval, widely rounded 
behind; length .75 mm., width .5 mm.; colour light yellowish, with 
internal organs showing through, giving it sometimes a greyish 
appearance. Shield covers anterior half of body; light reddish brown 
in colour, wider than long, broadly rounded at angles ; cervical 
emargination shallow; cervical grooves well marked, extending to near 
posterior margin; eyes large, hemispherical, light coloured, shining 
in orbits at lateral angles, surrounded by a spot of very dark colour ; 
fine punctures evenly distributed over the surface ; a large spine at 
each angle of cervical emargination. Dorsal surface (V , g ) with five 
shallow grooves, one median; nine caudal festoons, well marked. 
Rostrum light coloured, base sharply pointed on lateral edges, 
triangular in outline on dorsal surface ; palpi elongate, article II 
twice as long as article III ; hypostome spatulate, two rows of eleven 
or twelve stout pointed teeth on each half ; mandibles like those of the 
female. Ventral surface (V , li) like dorsal; a pair of long spines in 
median area, opposite coxae I, another opposite second inter-coxal 
space, and a third opposite coxae III ; four pairs of stigmatic 
openings, between coxae I and II, II and III, behind coxae III, and 
one pair near caudal margin. Legs slender, tarsi swollen, but 
tapering rapidly to a point ; coxae large ; sharp spine on posterior 
