40 Mr. W. F. Kirby on Five new 
reddish in the male) black. Four distinct submarginal cells. 
Legs redder than in the male, with the coxe and trochanters 
whitish. 
I was at first inclined to refer these specimens (which I 
think I am correct in placing together as sexes) to P. cas- 
tanea, Kirb.; but in that species the scutellum is much less 
thickly punctured. 
Perga sericea. 
Long. corp. 11 millim. 
Male.—Antenne six-jointed, the club as long as the three 
preceding joints; joint 3 rather longer than 4 and 5, and 
slightly constricted near the base. Head above, thorax, 
and pleura thickly and closely punctured ; head black above, 
including the antenne and mandibles, clypeus and labrum 
testaceous ; orbits broadly testaceous, from outside the an- 
tenne to the hinder rim of the head, but ending in a point 
where the occiput becomes concave. Grooves outside the 
outer ocelli indistinct. Prothorax testaceous, with the extreme 
front black, this colour curving slightly forwards on the sides. 
Mesothorax and scutellum black ; a wide stripe on the pleura, 
narrowed behind, the hinder borders of the mesonotum 
(narrowly) and the lateral margins and hinder angles of the 
scutellum (rather broadly) testaceous. Mesonotum with the 
sutures slightly marked; a groove on the frontal lobe and 
two slight ridges on each of the lateral lobes; scutellum 
shghtly grooved; the terminal tubercles unusually small. 
Wings hyaline, with rufous costa and nervures, with three 
or four submarginal cells ; nervures greatly interrupted with 
bull. Legs testaceous, the extremities of the hind femora, 
of the hind tibiz, and of the joints of the tarsi black. Abdomen 
blue-black above, with a fine white silky pubescence ; ter- 
minal segment and under surface testaceous. 
Not closely allied to any species before me, but much 
resembles the description of Pseudoperga ventralis, Guér., 
from ‘l'asmania, though apparently distinct. 
Perga sellata. 
Long. corp. 123 millim. 
Male.—Antennz six-jointed, the club as long as the three 
preceding joints. 
Head, thorax, and pleura thickly and closely punctured ; 
head luteous, the tips of the mandibles black ; vertex between 
the eyes above black, from a curve just behind the antennal 
