84 NatTuraAL History BULLETIN. 
indistinct or sometimes absent. /ytva with humeral ridges 
not spinous. Addomen with the basal median fovea not half 
as wide as the lateral. The ? has the clypeus remarkably flat, 
strongly punctured laterally, less so in the middle, not sepa- 
rated from the frontal margin. Median basal abdominal fovea 
wider; tenth antennal joint not modified. 
Habitat. Cincinnati, Ohio. 
B. PUNCTIFRONS, Casey. Red-brown to black, impunctate, 
pubescent, antenne, legs, and palpi dull-red. Length 1.8 to 
1.9 mm. 
Hlead carinate at the sides of the vertex, fovez nude, cir- 
cumambient sulcus interruyted in front, where the frontal ele- 
vation is connected with the rather flattened median arch; 
between the occipital foveze is a transverse impression; the 
frontal margin is densely punctured, anteriorly declivous to 
the interantennal line, the declivous portion triangular, slightly 
truncate in front; sub-frontal groove very narrow, sharply cut; 
clypeus conical, edges not reflexed, densely punctured. 
Antenne with the first joint as wide as the tenth, one-half 
longer than wide, the joints gradually decreasing in size to the 
eighth; eighth transversely oval, ninth and tenth not longer 
than the eighth, gradually wider, shorter inside, with the usual 
perforate fovea on the tenth; eleventh more than twice as 
wide as the tenth, and larger than the three preceding joints 
together, ovate-acuminate. Pvrothorax with the median sulcus 
fine, perceptible only in a favorable light, stronger near the 
fovea, spines very small and fine. Addomznal basal fovee 
nearly equal. The ¢ differs in the vertex being uniformly 
convex and scabrous; the antenne are of the same form as in 
the ¢é. 
Habitat. Southern Pennsylvania. 
