274 NAaTuRAL History BULLETIN. 
in the male and not more convex outside. Prothorax with the 
basal sulcus sharply defined, the median fovea small. /ytra 
widest near the tip, which is one-fourth wider than the high 
prominent shoulders; posterior margins straight, fringed with 
yellow hair, discal lines more deeply impressed in the darker 
specimens. Abdominal carinz short, more than one-fourth 
of the segmental width apart. Trochanters not spinous, 
anterior tibia emarginate inside from the upper third to the 
tarsus. Variable in color and size, also in the antenne. 
ad. VARICORNIS. Last antennal yellow. Canada. 
6b, TRUNCATICORNIS. Tenth joint flattened on the inside, 
convex outside, last joint with a recumbent tooth. Iowa. 
This species has a wide range. It occurs over the territory 
east of the Mississippi and and as far west as Idaho. 
B. BRENDELI, fforn. Black, polished, impunctate, legs, 
antenne and palpi brown, elytra varying to piceous-red. 
eneth, r.7 to. 1.8.mm. Plate: VIIL) Pig..47. 
Head with the frontal margin nearly straight, less concave 
between the frontal tubercles, the fovez larger. Antenna, 
8 with the first joint obconical, not half as long as the frontal 
margin, flattened above, second smaller, oval. Third and 
fourth smaller, obconical, equal, fifth, sixth, seventh and 
eighth, equal in length and thickness, conspicuously larger 
than the preceding, subglobular, with darker pubescence; 
ninth and tenth oblique-transverse outside, rounded inside, 
pointed forward, equal and connate with one another and 
with the last joint which is obliquely ovate-acuminate. These 
last three joints have a velvety black, densely pubescent club, 
three times as thick as the eighth, and as long as the five pre- 
ceding joints together. @ with the third to eighth joints 
equal, cylindrical, the last three forming a slightly smaller 
club with the joints not oblique, ninth and tenth trapezoidal, 
the pubescence not so dense as in the male. /ytra and 
abdomen as in B. conjuncia. 4% anterior tibiz toothed on the 
upper third, anterior trochanters armed with a slender spine. 
Habitat. Region of the Great Lakes. 
