XXXI, ARPACTUS, 238 
inner orbits of the eyes having a white line joining that which 
occupies the anterior margin of the clypeus, the latter sometimes 
testaceous in the middle ; the labrum white, fringed with a few 
silvery sete; the mandibles yellow testaceous, and piceous at 
their apex. 
The thorax black, delicately punctured, pubescent; the dor- 
solum with two or three central longitudinal lines, which ter- 
minate at the disk; the incisure at the base of the scutellum 
consute; the triangle at the base of the metathorax has two 
longitudinal parallel carina in its centre, the interstices filled 
with oblique strize, sometimes obsolete or smooth, and the whole 
enclosed by an elevated ridge, which is encircled by abbrevi- 
ated radiating strize, beyond which it is smooth, and covered at 
the sides with a silvery pubescence ; the posterior edge of the 
tubercles and the centre of the scutellum with a white spot ; 
the tegule testaceous; the wings slightly coloured, their ner- 
vures piceous; the legs black, the anterior and intermediate 
femora beneath and in front, and the tibiz in front, yellow-tes- 
taceous; the posterior tibize ferruginous at their base; all the 
tarsi piceous, the anterior pair strongly ciliated, and the inter- 
mediate and posterior tibiz spinose, 
The abdomen black, delicately punctured, the two first seg- 
ments red, with a white ovate spot on the lateral margins of the 
second, and another at the centre of the base of the fifth ¢. 
The g differs in having more of the silvery pubescence on 
the face ; the antennz, except the basal joint, piceous beneath, 
the white spot on the fifth segment forming a band, a little di- 
lated in the middle, and the sixth with a longitudinal white line 
in its centre; and it varies in the white markings of the clypeus 
being sometimes wanting, as are also the white mark on the 
scutellum, and those on the second segment, the band or mark 
on the fifth and sixth segments with or without each other, and 
in some all the white marks are deficient. 
$ 2 in my own and other Cabinets. 
+1i+ I once found the ¢ of this insect in abundance on 
