10.8 
Annals oe the Transvaal Museum. 
Ill swollen, sub-triangular on dorsal surface, transverse crest present 
on ventral surface; article IV small, sub-conical, in a pit on antero- 
ventral part of article III. Legs strong; coxae large, contiguous, as- 
wide as long ; coxae I prolonged anteriorly into a long point wbicb 
extends beyond the cervical angle of the shield and is visible from 
above; posterior margin divided into two short, stout teeth, sometimes 
not very prominent ; coxae II and III, with the two posterior teeth, 
barely indicated; tarsi terminated by a strong recurved spine- 
preceded by a smaller one on the ventral margin of coxae II, III, 
and IV ; caruncle almost half' as long as the claws; stilt hairs on all 
the articles. 
Female. — Body elliptical, as wide in front as behind, generally 
a little constricted in the middle near the level of coxae IV ; length 
10 mm. by 6 mm. wide; when unengorged, length 2 mm. by 1.1 mm. 
wide; colour, when unengorged, bluish or yellowish, with darker bands- 
and lines, shield bapitulum and legs light reddish brown, shield 
lighter in posterior part between cervical grooves ; when engorged of 
a deep bluish colour (brownish in alcohol), with yellowish lines 
marking the ramifications of the intestines. Shield (VI, d) very 
small, longer than wide, emargination in front to receive the rostrum, 
very shallow ; lateral edges straight and parallel, then curved and 
converging from the level of the eyes, posterior angle widely 
rounded ; cervical grooves diverging, dividing the shield into three 
unequal parts, the middle portion widest and flat, the lateral portions- 
arched ; eyes small, near the anterior third ; punctuations small and 
few; hairs numerous and long, mostly in cervical angles of the shield. 
Dorsal surface, with three antero-posterior grooves, interrupted near 
the middle, stopping a little distance from the shield and posterior 
margin, all of these nearly effaced in extreme engorgement ; a few 
short hairs present on all the surface, each in a deep pit when 
unengorged. Ventral surface same colour as dorsal, and with hairs 
same; sexual orifice small, very anterior, narrow, opposite coxae I; 
sexual grooves commencing at level of coxae II, slightly divergent, 
and extending to near posterior margin ; stigmatic plates a very 
short oval, nearly circular; anus near posterior third; no anal groove; 
ano-marginal groove long. Rostrum ( VI, d) like that of the male in 
form, larger, base a little wider, more salient in front of shield into- 
which it does not fit so deephy- ; mandibles (VI, e) with transverse 
process of inner apophysis, bicuspid, outer apophysis with three 
teeth, two lower teeth large and strong, anterior small and sub- 
terminal; hypostome as in male; palpi as in male, except that they 
are longer. Legs rather short and slender, first pair shortest, 
yellowish brown in colour ; coxae longer than wide, coxae I sub- 
triangular, posterior margin divided into two teeth, more or less well 
developed ; coxae II, III, and IV with posterior teeth barely 
indicated; tarsi as in male. 
Nymph. — Body elongate, oval, very narrow behind and wide in 
front; length 1.3 mm. by 0.9 mm. wide when unengorged, when 
engorged 2 mm. long by 1.3 mm. wide. Colour light, yellowish or 
greyish with dark streaks and lines, as in unengorged female. 
Shield, legs and capitulum light reddish brown, with a red spot 
lateral of the cervical grooves on the shield ; lateral areas of shield 
darker coloured. Shield longer than wide, lateral angles near the- 
