Annals of the Transvaal Museum. 
JSymph (engorged) : Length 2 mm. by 1 mm. wide ; narrowly 
ronnded in front, widely rounded behind. Colour bluish black. Dorsal 
surface with numerous large irregularly distributed punctuations, some 
of which bear short whitish hairs ; two short anterior dorsal grooves close 
to median line and slightly concave ; three posterior grooves, the median 
straight and extending from the anterior grooves to the posterior margin ; 
posterior festoons distinctly marked. Dorsal shield light brown in colour, 
with the posterior portion darker ; large ; almost circular in outline ; 
cervical emargination shallow and wide ; cervical grooves shallow, con- 
verging and extending half the length of the shield; surface finely 
granulated ; no eyes ; coxae I extend slightly beyond the cervical angles 
of the shield. Ventral surface similar to the dorsal'; genital pore 
absent ; genital grooves begin opposite coxae IV, diverge and reach the 
230stero-lateral margin at about the third festoon from the middle one ; 
anus small, just below the middle of the length of the body ; anal groove 
pointed behind, and reaching the genital grooves on each side in front ; 
ano-marginal gtrdove nearly reaches ithe posterior margin ; stigmatic 
plates large, whitish, nearly circular in outline, situated at the level of 
the anus ; coxae and legs similar to those of the female, all light brown 
m colour ; an additional pair of stigmatic pores between coxae I and II 
on the lateral margin of the body. Rostrum light brown in colour ; base 
with dorsal surface twice as wide as long, posterior angles prominent ; 
article I of palpi small ; article II wider than long, posterior portion of 
outer edge prolonged laterally into a sharp tooth ; article III as wide 
as long, conical, median edge prolonged over the mandibular sheath ; 
both articles II and III valvate ; article IV small and papilliform and 
extending ventrally. 
Larva (engorged) : Length 1 mm., width 0.6 mm. Colour bluish, 
except the legs, shield, and rostrum, which are light brown. Dorsal 
surface with anterior and posterior grooves similar to those of the nymph ; 
a few short, light-coloured hairs ; a marginal groove slightly indicated, 
extending from the shield to about the festoon second from the median 
one ; caudal festoons well marked. Dorsal shield small, covering hardly 
one-third of the length of the body, heart-shaped in outline, wider than 
long, surface reticulated ; cervical emargination shallow ; cervical grooves 
deep, concave outward, and extending almost to the postero-lateral 
margin ; no eyes ; coxae I project very much beyond the cervical angles 
of the shield. Ventral surface similar to dorsal ; genital grooves widely 
separated, broken, reaching almost to the posterior margin ; anus near 
the posterior third of the length ; anal groove does not join the genital 
grooves ; ano-marginal groove deep, and nearly reaches the posterior 
margin ; coxae well separated, rectangular in outline, each with a small 
tooth on the posterior margin ; three pairs of stigmatic openings, one pair 
between coxae I and II on the lateral margin of the body, the second pair 
directly posterior of and close to coxae II, the third pair posterior of coxae 
III. Legs, three pairs, stout, light brown in colour. Rostrum with base 
three times as wide as long on the dorsal surface, posterior angles not very 
prominent ; articles II and III of the palpi when taken together are 
longer than wide, triangular in outline, widest near the middle o'f article 
II, but article II is not protracted laterally into such a sharp spine as in 
the nymphs and article IV in a pit on the ventro-median surface of 
article III, papilliform with several stout hairs on the tip ; hypostome 
small, spatulate, with five or six rows of two sharp teeth each on each 
half ; mandibles similar to those of the male except that the lower tooth 
on the outer apophysis is closer to the upper two teeth. 
