THE PsELAPHID OF NorTH AMERICA. 279 
Head and elytra as in &. abdominalis, the impressions 
deeper. Prothorax widest slightly behind the middle and 
more convex toward the base, the lateral fovez not in full 
view from above. Antenne not quite half as long as the 
entire body, the fifth joint a little longer. Addomen slightly 
divergent to the tip of the first segment, the obsolete carinz 
including one-half the segmental width in the female. In the 
male the two basal segments are sculptured, the first much 
depressed at the lateral basal angles, posterior margin pro- 
duced, emarginate at the sides, broadly gouged in the middle, 
leaving each side a blunt-pointed lobe. In the middle of the 
surface is an X-shaped elevation. The second segment is 
concave from side to side at the base, and in the middle is a 
large, deep, punctured fovea; the posterior margin is produced 
backward, broadly emarginate laterally, concave in the 
middle, leaving an oblong longitudinal elevation on each side. 
The third segment is of much the same general outlines as 
the second, but without visible sculpture. Legs and under 
surface not exhibiting any peculiarities. This insect repre- 
sents the southern form of B. abdominalis. 
Habitat. From the Gulf to the Ohio river. 
B. INTERMEDIA, Grendel. Uniform brownish-red, impunc- 
tate, pruinose, more shining than £&. abdominalis. Length, 
Pom.) Plate’ VIN. Figs 52. 
flead and prothorax smaller, more deeply impressed, the 
occipital fovea large, open toward the eyes, the latter more 
convex, lateral fovea not in full view from above. Edlytra 
more convex, the suture two-thirds, the shoulder-width one- 
half, and the width at tip not quite twice greater than the 
length of the prothorax. Addomen with the margins of the 
basal segments parallel, carine including rather less than one- 
third of the segmental width. ¢ with the basal dorsal seg- 
ment obliquely oblong-ovoidal, impressed from the anterior 
external angle to the posterior middle third of the segment, 
the impression limited inside by an obliquely arcuate ridge, 
which terminates posteriorly in a declivous sharp edge. The 
