118 
Annals of the Transvaal Museum. 
radius at its junction with the cubitus curves inwardly ; the cubitus 
projects beyond it ; the second recurrent nervure is obliquely sloped 
towards the stigma from below the middle ; below the middle it is roundly 
curved ; it is received at the base of the apical third. 
Allied to M. violaceipennis Cam.* ; in that species the mesonotai 
furrows commence near the base, the hair is black, as is also the oral 
region, and there is no white mark on the fifth abdominal segment. 
Plesia Jur. 
Plesia reticulata Cam. 
Records Albany Museum, i, 300. 
Waterval No. 211, Zoutpansberg. December. 
Plesia pacificatrix, sp. n. 
Black ; the head and thorax densely covered with longish white 
pubescence, the abdomen with the white pubescence shorter and sparser, 
shorter and denser on the back in the centre ; clypeus, mandibles except 
at the apex, a longish line, narrowed inwardly, on the sides of the pro- 
notum, a narrower, continuous line of equal width on the apex, tegulae, 
an irregular, longish, triangular mark on the base of the mesopleurae, 
the narrow end above, the base straight, the apex irregular, with two 
slight rounded projections above the middle, the lower part straight ; 
lines, dilated laterally towards the base, on the basal six abdominal seg- 
ments, a broad curved line, rounded above on the sides of the seventh, 
nearer the apex than the base, and lines, dilated laterally, on the second 
to sixth, the central part of the first line narrow, the lateral dilatation 
triangular, straight, longitudinal on the inner side, the lines on the inner 
side roundly narrowed from the outer side towards the centre, and two 
small spots on the centre of the seventh, bright yellow ; legs bright yellow ; 
the coxae, trochanters, the basal half of the four front femora above, and 
the hinder more narrowly all round, and a line on the inner side of the tibiae, 
bJack ; wings hyaline ; the stigma rufo- testaceous ; the nervures black ; 
the third and fourth abscissae of radius equal in length ; the recurrent 
nervures received at the same distance from the transverse cubital, the 
second recurrent roundly curved outwardly in the middle ; the transverse 
cubital nervure in hind wings sharply, angularly broken above the 
middle. Male. 
Length, 14 mm. 
Waterval No. 211, Zoutpansberg. November. 
Head and thorax closely, strongly punctured, densely covered with 
white pubescence ; the mesonotum less and the metanotum more closely 
punctured than the head ; clypeus with the apex broadly rounded ; base 
of abdomen smooth, the rest punctured, the puncturation becoming 
gradually stronger towards the apical segment, which has the incision 
large, about one quarter longer than it is wide at the apex. The ventral 
segments are strongly punctured, the basal more closely, less strongly, 
and more regularly than the others. 
Records Albany Museum, i, 301. 
