1863.] 
283 
clouded, with a pale lunule near the tip ; stigma pale ferruginous, ner- 
vures ferruginous. Legs yellow varied with ferruginous, especially 
the femora at base and within. Abdomen blackish-brown, each seg¬ 
ment above with a broad yellow fascia, the posterior margin of which 
is slightly attenuated and more or less waved, the anterior margin of 
the fascia on the first segment is slightly denticulated; beneath same 
as above, except that there is a spot, instead of a band, on the first 
segment, and the fasciae are rather more attenuated in the middle pos¬ 
teriorly. Length 6 lines. 
-Head black; clypeus, a spot above it, labrum, mandibles 
except tips, face on each side of the clypeus, and the orbits of the eyes, 
yellow ; a minute black dot on each side of the clypeus. Antennae 
rather long, ferruginous, blackish behind towards the base ; scape ro¬ 
bust, yellow in front, black behind. Thorax black, clothed with short 
pale hairs; the tubercles, an oblong spot beneath, the tegulae except a 
spot on the disk, two small round spots on the scutellum, and (in one 
specimen) a small bilobed patch on each side of the metathorax, yel¬ 
low. Wings hyaline, apical margins faintly clouded. Legs yellow; 
base of all the femora, the posterior femora and their tibiae within, 
and a more or less distinct oblong spot or vitta on the outside of the 
posterior tibim, blackish or fuscous. Abdomen black, with yellow 
fascim similar to those of the female, that on the first segment above, 
being sometimes interrupted in the middle. Length 5 lines. 
Hah. Penn., Del., Conn. (Coll. Ent. Soc. Phil., and Mr. E. Norton.) 
The longitudinal lines on the thorax are sometimes ferruginous or 
yellow^ margined with ferruginous. 
I have before me four 9 specimens which have the face rather 
shorter, the clypeus, labrum and mandibles, except tips, either en¬ 
tirely ferruginous or yellow stained with ferruginous, and a small 
black dot on each side of the clypeus; except in one specimen, there 
is no yellow spot in front of the ocelli ; the longitudinal dorsal yellow 
or ferruginous lines of the thorax and the yellow patch on the pleura 
are sometimes very indistinct or entirely absent; the sublobes of the 
scutellum are smaller and more prominent and the yellow transverse 
line on the postscutellum is reduced to a mere spot; the yellow fascia 
on the first segment of the abdomen above is deeply indented on the 
middle anteriorly, and sometimes interrupted with ferruginous. These 
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