220 
Annals of the Transvaal Museum. 
plates ; posterior festoons set off anteriorly by a deep marginal groove 
reaching on each side to the stigmatic plates, these plates are situated at 
the level of the anus, and are short, comma-shaped, with the tail extend- 
ing to the dorsal surface, plates light coloured, with darker rims ; coxae 
1 triangular, the remainder quadrilateral in. outline, coxae I separated 
from coxae II, III, and IV by a wide space, the three posterior coxae being 
contiguous, a wide tooth on the posterior angle of coxae I, a similar sharp 
tooth on the postero-median angle of coxae IY, a wide blunt tooth on the 
middle of the posterior margin of coxae II and III, two long, stout hairs 
on the postero-lateral angle of each coxa. Legs light brown in colour, 
stout ; tarsi abruptly attenuated at tip ; pulvillum large, nearly as long 
as the claws. 
Female (engorged) : Length, 6 mm. by 4.5 mm. wide ; sides nearly 
parallel, widely rounded at both ends. Colour dark chestnut brown when 
in formalin, bluish when alive, legs and rostrum light brown, dorsal shield 
same colour as body. Dorsal surface with numerous large, equal, shallow 
punctures, irregularly distributed, four short anterior grooves, the lateral 
ones slightly concave toward the median line | three long posterior 
grooves, the median straight and extending the farthest anteriorly and 
posteriorly, laterals concave toward the median line ; posterior festoons 
present, but scarcely visible in the engorged specimen ; dorsal porose 
areas at about the middle of the length of the body and close to the 
median line. Dorsal shield small, dark chestnut brown in colour, widely 
elliptical in outline, almost as wide as long ; cervical emargination 
shallow ; cervical grooves deep, at first converging, then nearly parallel, 
and extending over two-thirds of the length of the shield ; a short median 
posterior groove ; no eyes ; punctuations large, unequal, widely separated 
and irregularly distributed. Rostrum with dorsal surface of base twice 
as wide as long, posterior angles prominent ; ventral surface of base 
wider than long, but nearly semi-circular in outline ; palpi similar to those 
of the male, except that the lateral projection of article II is wider,- 
making articles II and III together conical ; ventral tooth of article III 
is smaller and narrower than in the male ; four pinnate spines on the 
posterior part of the medio-ventral edge of article III and eight similar 
spines on the medio-ventral edge of article II instead of three and nine 
respectively as in male ; mandibles with outer apophysis bearing five 
teeth, two small and equal ones at the tip, and the other three pro- 
gressively larger from tip to base, inner apophysis with the transverse 
process large and tridentate ; hypostome of usual shape, numerous 
denticles at the tip, followed on each half by one transverse row of three 
iarge teeth, behind which is twelve rows of four large teeth each, rows 
rather irregular and teeth not so large or sharp as in male. Ventral 
surface similar to dorsal surface ; genital pore small, opposite coxae II ; 
genital grooves shallow, except in the middle of their length, diverging 
posterior of pore then nearly parallel till they reach the level of the 
stigmatic plates, where they diverge laterally, reaching almost to the 
posterior margin opposite the third festoon from the middle ; anus 
slightly below the middle of the length of the body ; anal groove scarcely 
visible in engorged specimen ; ano-marginal groove well marked, and 
reaching the posterior margin ; coxae all widely separated, coxae I close 
to the rostrum, all coxae similar to those of the male ; stigmatic plates 
circular in outline, with the dorso-lateral tail scarcely indicated, colour 
almost white, with a darker border. Legs similar to those of the male, 
but comparatively shorter and more slender. 
