114 THE UNIVERSITY SCIENCE BULLETIN. 
largest division of the body), a very little wider than long, the posterior — 
lobe large and extending back in the form of a broad triangle, with the 
sides nearly straight and the tip a little rounded; lateral margins (in- | 
cluding the humeri) constituting high, broad ridges. Anterior lobe much — 
narrower than the head across the eyes, the lateral margins and submar- 
gins lobately elevated. Anterior legs stout, the tibiz a little curved at © 
tip, with the process small and almost in contact with the surface on 
which it is situated; basal joint of tarsi about cne-fourth the length of 
the second, the second carrying the unguiculi about one-third of its length 
from the tip. Intermediate femora about two-thirds the length of the 
posterior; the tibia not quite as long as the posterior femur and tibia 
conjoined, but equal in length to the distance from the base of head to 
the tip of the intermediate femur; tarsus equal in length to the posterior © 
tibia and tarsus conjoined; hemelytra not covering the whole width of — 
mesothorax, but much longer than the body; corium snort, having two ~ 
elongated cells eceupying nearly the whole width; the nervures very ~ 
prominent, membrane more than twice as long as the corium, having a — 
submarginal nervure running around the entire circumference, follow- — 
ing equally the curve of the tip, a longitudinal suture extends along the 
middle quite to the tip. Abdomen broad and short; the penultimate ven- 
tral segment of the female concavely curved on the posterior margin.” — 
Metrobates hesperius Uhl. 1878. 
Uhl., Proc. Boston Soc. Nat. Hist., vol. XIX, part IV, p. 1438. 
“Opaque, velvety blue-black, or brown-black, densely pubescent, robust, — 
the mesothorax very large and composing the larger part of the body. 
Head convex, robust, brown, at base rufous, or orange, the anterior part 
of which is invaded by a rounded spot of the black surface extending © 
from the face; minutely, densely pubescent; rostrum black, shining be- 
neath, densely grayish pubescent above, more or less orange at base. 
Antenne black, pubescent, the basal fourth of the first joint orange. © 
Pronotum very small in the unwinged specimens, less than one-half as © 
long as wide, having the anterior margin a little concave; the surface ~ 
closely, finely pubescent, the anterior lobe with a yellow, depressed spot — 
on the middle, covered by a more or less wide gray, or lead-blue middle © 
line, which color expands and covers the whole width of the tergum to its — 
tip, omitting only a few black streaks on the disks and margins of the seg- — 
ments. The whole breast, venter, and two spots on the pleura lead color, — 
with a sericeous gloss. 
“The winged form has the pronotum blackish brown, densely pubes- — 
cent, the middle of the anterior lobe broadly depressed, covered by an ~ 
orange spot, lacking the bluish stripe. Coxe yellow beneath, legs brown- 
ish black, the anterior pair yellow at base, and on the under side the — 
yellow is a little farther extended. Sternum blackish, each side of it yel- — 
lowish. Hemelytra dark brown, with a faint paler streak on the medial — 
suture, the base and costal margin pubescent. Venter cinereous, the disk — 
of the penultimate and base of the last segment yellow. 
“Length to tip of hemelytra, 5 mm.; extreme width of mesothorax, 
2 mm.; unwinged—length, 3 to 4 mm.; width of mesothorax, 1% to 
2% mm.” 
Reported for Ontario, Maine, Massachusetts, Rhode Island, New York, 4 
Maryland, North Carolina and South Carolina, according to Van Duzee. — 
Genus TREPOBATES Uhler. 
“As the name of this genus is preoccupied, and the genus has not yet 
been fully described, for lack of winged specimens, it becomes necessary 
to give the following characters, which are in augmentation of those © 
given by Dr. Buchanan-White: Anterior tarsi normally three-jointed © 
(exceptionally two-jointed) ; the hemelytra curved and tapering at base, © 
