KORTH AMERICAN II YMENOPTERA. 
141 
ocelli connected by a furrow: vertex with two smooth, polished tubercles; eyes 
from the emarsination upward with a distinct margin; clypeus emarginate; 
space between the eyes at top equal to the length of the second and third an- 
tennal Joints united, beneath it is about equal to the length of the first joint 
of the flagellum ; from the emargination (»f the eyes downward, the cheeks, 
sutures of the thorax, and posterior face of metathorax, silvery. Thorax shin- 
ing, finely punctured, sparsely clothed with pale pubescence; scutellum and 
postscutellum not im])ressed medially; metathorax above wdth an irregularly 
striated, enclosed space, the posterior face strongly furrowed medially, strongly 
rugose; wings hyaline, apical margin fuscous; legs with sericeous pile, the pos- 
terior tarsi whitish, except base and apex ; first segment of abdomen about one- 
third longer than the following one, the apex strongly raised above the base of 
second segment, the second segment at apex slightly raised above the base of the 
following segment. Length .45 — .50 inch. 
'J, . — Differs from the 9 '’7 narrower front, the length of the last Joint of 
antennfe is equal to the three preceding Joints united, and by the posterior tro- 
chanters being armed with a spine. Length .45 — .50 inch. 
Occurs from Canadti (Provcmcher) to Texas. 
0. Trypoxylon projeetiiin n. sp. 
9 . — Front with strong, separated punctures, with a medial impression, very 
strongly produced above the antenna? into a projection ; eyes from the emar- 
gination upward with a distinct margin; space between the eyes at the vertex 
equal to the length of the second and third Joints of the flagellum united, be- 
neath it is slightly less; the second Joint of the flagellum more than half as long 
as the preceding one; clypeus, except at base, with a strong medial carina, the 
anterior margin acutely emarginate, with a slight tooth on each side of the 
emargination ; from the emargination of the eyes downward, the posterior orbits, 
sutures of the thorax and posterior face of metathorax, laterally, with silvery 
pubescence. Thorax finely and sparsely i)unctured, clothed with short, pale 
pubescence; dorsulum with a lateral impressed line near the tegulte ; metauotum 
transversely striated, with a strong, curved carina on each side, a deep sulcus 
begins between the apices of the carinse and extends down on the posterior face, 
which is rugose, to the apex; wings fusco-hyaline, with darker apical margins; 
posterior tarsi whitish medially. Abdomen with the first segment strongly 
tumid at apex, not much longer than the following segment ; the third segment 
slightly raised at base above. Length .60 inch. 
— Differs from the 9 having the clypeus more broadly emarginate, the 
first Joint of the flagellum being slightly longer than the two following ones 
united and the apical Joint being as long as the three preceding ones together; 
space between the eyes at vertex equal to the length of the first and second 
Joints of the flagellum united, beneath it is slightly less; the carina of the 
metauotum end in two stout projections, the posterior face of metathorax coarsely 
and transversely striated; the tarsi all more or less whitish. Length .50 inch. 
Occurs in Louisiana; Florida (C. W. Johnson). 
Differs from the preceding species by its stouter legs, carinated 
metanotuin and the stout frontal projection. 
