THE PsELAPHIDA OF NorTH AMERICA. 299 
eleventh wider, ovate, as long as the ninth and tenth together. 
Antenne of male with the first to third joints sub-equal in 
width, nearly all of the same length, fourth very small, trian- 
gular, fifth transverse in some specimens, three times as wide 
as the length, which equals that of the second. Sixth to ninth 
of similar form gradually shorter, transverse, tenth wider, 
one-third as long as wide, eleventh ovate-acuminate as long 
as the first and second together. The posterior tibiz of the 
4 are dilated. Pyrothorax impunctuate, widest at or behind 
the middle, evenly carinate, lateral foveze somewhat less than 
in full view from above, median puncture conspicuous. 4V/ytra 
a little more than one-third longer than the prothorax, the 
same across the high shoulders, and about one-third more 
across the tips. They are faintly reticulate, uneven, discal 
lines slightly arcuate, nearly parallel, basal intermediate 
puncture conspicuous. Sutural lines nearly parallel. Addo- 
men with the basal carine one-fourth the length and including 
one-third the width of the segment. 
Habitat. Eastern States. The form with red elytra from 
the Pacific Coast is described as a/bconica by Motschulsky. 
B. tnFrormis, Casey. Dark red, elytra brighter, legs and 
antenne testaceous, polished, hardly punctulate, pubescence 
short. Length, 1.4 mm. Plate IX., Fig. 69. Antenna of 4 
after Casey. 
flead more visibly punctured at the sides, fovee not large, 
equal, eyes prominent, distant about their own length from 
the base, frontal margin broadly angulate. Antenne not 
longer than the head and prothorax, the three basal joints 
longer than wide, nearly equal in length, gradually decreasing 
in width; fourth wider than long, small, fifth thicker, a little 
longer than wide, sixth with the length and breadth equal, as 
wide as the fifth, obliquely truncate; seventh to ninth slightly 
transverse, as wide as the fifth, tenth twice the width of the 
ninth, half as long as wide; the eleventh joint is three times as 
wide as the ninth, not much longer, and truncate at base. 
Prothorax slightly broader than long, transversely convex, 
