36 Trans. Acad. Sci. of St. Louis. 
14 — Body pale flavo-testaceous throughout, the head black. Head unusu- 
ally small in size, very much narrower than the elytra, the sides 
parallel and straight, broadly rounded and converging at base to the 
the neck, the punctures strong and well separated; prothorax distinctly 
narrower than the head, only very slightly elongate, the sides sub- 
parallel, the punctures coarse, impressed, deep, irregular and moderately 
close-set; elytra unusually large, parallel, only slightly longer than 
wide, fully one-half wider and longer than the prothorax, the punctures 
much smaller than those of the latter, rather close-set and irregular; 
abdomen not much narrower than the elytra, rather coarsely, moder- 
ately closely punctulate. Male not at hand; female with the foveiform 
fold of the second ventral stronger than in bicolor. Length 9.0 mm.; 
width 1.65 mm. New York and Virginia (Newport News). 
melanocephalum Er. 
Body dark piceo-rufous in color, the head black.....-..seeveeescccee oee15 
15 — Head moderately large but not quite as wide as the elytra, the sides 
parallel and nearly straight for half the distance from the eyes to the 
neck, then gradually rounded and converging to the latter; punctures 
moderately coarse, deep and very close-set, separated by rather less 
than their own widths; prothorax much narrower than the head, the 
sides parallel and feebly arcuate, only slightly elongate, the base and 
apex equal in width; punctures rather coarse, deep, not very close; 
elytra distinctly elongated, parallel, two-fifths wider and longer than 
the prothorax, coarsely, deeply, closely and irregularly punctured; ab- 
domen narrower than the elytra, rather finely, not densely punctulate, 
Male not at hand; female with the straight transverse setose fold of the 
second ventral occupying about a tenth of the entire width. Length 
10.5 mm.; width 1.6 mm. New Jersey......-...+---+.-.Dadium Grav. 
Head larger, very nearly as wide as the elytra, the sides parallel and more 
or less arcuate behind the eyes, broadly rounding to the base; punc- 
tures not very coarse and separated by about twice their own widths; 
prothorax as in badiwm but with the punctures sparser and rather feebler; 
elytra shorter and broader, only slightly elongate, nearly one-half 
wider and a third longer than the prothorax, the punctures less coarse 
and distinctly less close-set, irregular throughout; abdomen much nar- 
rower than the elytra, the punctures finer and sparser. Male with the 
‘fold of the second ventral straight and occupying median sixth or 
seventh, the fovea of the third transversely elliptical and moderately 
darge, the lobe narrow, parallel and elongate, extending beyond the apex 
of the fourth, evenly and strongly rounded at tip and occupying less 
than median third, the sixth small, narrow, obtusely rounded at apex; 
‘female with the fold of the second ventral nearly as in badium. Length 
11.8 mm.; width 1.75 mm. Ohio, Iowa, Missouri and Texas. 
strenuum nt. sp. 
Var A—Similar to strenwum but smaller and more slender, the head not 
inflated behind the eyes, the sculpture throughout similar; prothorax 
notably smaller, still less elongate, with the sides strongly converging 
behind the middle, the base being much narrower than the apex: 
elytra narrower and more elongate, scarcely at all wider than the 
head. Male unknown; female with sexual characters nearly as in 
