136 
This species was first described by Say under the name of Capsus 
rvapidus, in his ‘‘Heteropterous Hemiptera of North America,” pub- 
lished in 1831,* and afterwards by Herrick-Schaeffert (1848) as 
C. multicolor. In Uhler’s List of Hemiptera West of the Mississippi 
River (1876), it is catalogued under the genus Calocoris, of Fieber ; 
but in his notices of the Hemiptera Heteroptera in the Harris Col- 
lection} (1878), it is assigned to Derzocoris (Kirschb.), to which it 
clearly belongs. 
DESCRIPTION. 
Adult.—(Plate XIV, Fig. 1.) The adult is narrowly oval in out- 
line, about one-fourth of an inch (7 mm.,) in length, and eleven 
hundredths of an inch wide. The general color is dusky, bordered 
with yellow, except the head and thorax, which are orange brown. 
The head is triangular in outline, strongly arched above, nearly 
smooth, provided with a few sparse, short hairs which become 
longer and thicker in front of the antenne. There is a_ broad 
shallow depression upon the vertex, and in front of this, upon either 
side of the middle line, a series of faint oblique grooves running 
backwards and outwards nearly to the eye. Its color is orange 
brown, deepening almost to black upon the tylus. The base and 
tip of the rostrum are black, the remainder orange brown, like the 
head. The eyes are red or black. 
The antenne are very long, reaching the tip of the abdomen. 
The first jomt is longer than the head, much thickened externally, 
shining black, and provided with short, appressed hairs. The second 
joint is nearly three times as long as the first, slender and straight, 
slightly thickened outward, black, with a broad white band on the 
basal two-thirds. The third jomt is about twice as long as the first, 
white on the basal half and red or black distally. The fourth joint 
is about half as long as the third, with the basal third white and 
the remainder red. 
The thorax is trapezoidal in outline, strongly narrowed forward, 
the anterior margin being two-thirds the posterior. The latter is 
strongly arched and the posterior angles broadly rounded. The 
disc of the pronotum is feebly and sparsely punctured, obscurely 
rugulose and sparingly provided with short, yellowish hairs. The 
transverse callus immediately behind the head is pale yellow, the 
remainder of the prothorax a darker yellow, the anterior fourth 
being orange brown, the same color as the head. On the posterior 
third is a transverse black band, rarely attaining the margins on 
either side, and usually constricted in the middle, often, im fact, 
completely divided, when it forms two oblong black blotches placed 
transversely. The punctures and hairs of the propleura are like 
those of the disc. Its color is brownish yellow, bordered below with 
paler. The side pieces of the thorax are brown shading into black, 
the cox, orange brown. 
* Die Wanzeartigen Insektens, Vol. VIII, p. 18, pl, 254. fig. 794. 4 
t Proc. Bost. Soc. Nat. Hist., Vol. XIX, p. 400. 
1 Complete writings, Leconte’s edition, Vol. I, p. 239. 
