1921] Banks: WNearctic Fossorial Hymenoptera iW 
Rhopalum (Alliognathus) carolina sp. nov. 
9. Shining black, with fine appressed white pubescence, silvery 
on the clypeus and half-way up the orbits; scape beneath, front tibize 
and tarsi, mid-tarsi (except apical two joints), and the spurs yellowish. 
Structure in general similar to the western A. occidentalis, but smaller. 
The truncate projection of clypeus barely noticeable; frontal groove 
and ocellar depressions distinct; first joint of the flagellum barely longer 
than the second; fove at base of the enclosure very small and faint; 
the Y-ridge distinct and transverse ridges outside of it; hind tibiz 
not serrate, but with a row of fine, short bristles; pygidium not very 
broad, truncate at tip; stigma dark brown, veins much paler brown. 
Length, 5.5 mm. 
From north fork of the Swannanoa River, Black Mts., 
N. Car., May. 
Thyreopus rufibasis sp. nov. 
2. Black, clothed with sericeous pubescence, dense and silvery 
on the clypeus. Mandibles (except tip), clypeus, scape, pedicellum, 
first joint of flagellum, pronotum, tubercles, large spot below fore 
wing, tegule, scutellum, and spot each side in front, first and second 
segments of abdomen almost wholly, and very narrow spot each side 
on the third segment, yellow to rufous; the legs largely rufous, femora 
darkened through middle. Wings brownish, stigma yellowish, veins 
brown. First joint of flagellum plainly longer than the second; ocelli 
rather large, hind ones scarcely nearer eyes than to each other; pro- 
notum smooth; dorsulum densely, finely punctate; scutellum more 
sparsely punctured; postscutellum striate; metanotum coarsely rugose, 
the groove broad in the middle, each side are several irregular areas, 
behind on each side is a lateral area which is crossed by two or three 
ridges, outside of the lateral ridges are a few foveze; abdomen very 
minutely punctate, moderately slender, pygidium punctate and hairy. 
Length, 9 mm. 
From Gulfport, Florida, (Reynolds). 
Blepharipus parkeri sp. nov. 
9. Black, more or less sericeous, most distinct on clypeus, but 
also on lower sides of head, mesopleura and tibize. Mandibles in part, 
scape beneath, anterior tibiz in front, mid and hind tibia at base, 
front and mid basitarsi and the spurs pale whitish; sometimes a small 
spot on the pronotum. Wings with black stigma and venation. 
Enclosure of metanotum strongly marked and margined ‘by impressed 
foveze, the surface each side convex and polished, posterior face slightly 
rugulose at tip, nearly smooth above, lateral ridges distinct on lower 
half, and outside of it a foveate groove, the pleura smooth and shining. 
Abdomen polished, apical segments more sericeous, below with row of 
hairs at tip of each segment; pygidium dull punctate. 
Length, 5 to 6.5 mm. 
