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The anterior marginal callus is white or yellow, as is also the 
smooth area behind it. The disk of the pronotum of a well-marked 
specimen is chiefly black, with five longitudinal white or yellow 
stripes. The median of these is the most irregular in width, ex- 
panding broadly in front into a somewhat triangular area, which 
often connects anteriorly with the pale stripes adjacent. This line is 
also sometimes widened posteriorly, so as to cut off the hinder 
extremities of the adjacent black stripes. In very dark specimens, 
the yellow stripes of the thorax are lost posteriorly in the general 
black of the surface, and there is often a narrow black collar on 
the neck. All the margins of the pronotum are commonly white. 
The side of the prothorax is yellow, with two very broad, longitudi- 
nal black bands, which unite in front but do not quite reach the 
margin behind. ‘The side-pieces of the meso- and meta-thorax are 
dusky with yellow edges, and the coxe are dusky externally; in 
pale specimens both these and the side-pieces are concolorous. 
In such specimens, the yellow of the thorax often predominates, 
being then marked with six longitudinal black stripes, more or less 
complete. 
The scutellum is hairy, and transversely rugose. It is ordinarily 
black, with a Y-shaped mark, the short stem of which reaches the 
tip of the scutellum, while its lateral arms enclose a_ triangular 
black patch between them, and leave a narrow black stripe outside. 
The extreme margin of the scutellum is yellow. Sometimes the 
included triangle is longitudinally divided by a narrow black line; 
and in dark specimens the Y-shaped white mark is often reduced to 
a triangle of three white points. 
The wing covers are sparingly pubescent with yellow hair, and 
coarsely and closely punctured, the punctures being more or less 
confluent, so as to give the surface a rugose appearance. They 
are so irregularly and variably mottled with dusky and yellowish 
as to defy definite description. The regions most likely to be de- 
cidedly darkened are the posterior part of the corium and the 
middle of the clavus, opposite the tip of the scutellum. The cuneus 
is usually yellow, with a black dot at its tip, and often with two 
others at the basal angles. The hemelytra may, however, be almost 
wholly black, or reddish black, with, perhaps, a narrow pale stripe 
along the middle of the corium. ‘The membrane is always clouded, 
at least, with dusky. 
The abdomen is pubescent, and minutely punctured. It varies in 
color from black, or reddish black, with two broad yellowish stripes, 
to yellow, with a median, basal black blotch, and two lateral dusky 
stripes. The spiracles are always yellow, and the yellow lateral . 
stripes extend forward upon the sides of the thorax. The legs are 
pubescent, tibiz spinose. The posterior thighs are pale at base, 
black or dusky beyond, with three pale rings, the last one terminal. 
The hind tibiz are pale, with two dark rings near the upper eud, and 
one at the lower; the tarsi pale with black tips. The other legs 
are like the preceding, but less vividly and extensively colored. 
The antenne are dark, except a wide, median ring on the second 
article, which is pale. The first joimt is shortest and thickest, some- 
what clavate, and about as long as the head is wide. The second 
