THE PsELAPHID@ OF NorTH AMERICA. 19 
diate trochanter with a slender spine; posterior tibia arcuate. 
Habitat. Pennsylvania and Illinois. 
B. r1ipARIuS, Audé. Bright red, slender, strongly punctur- 
ed, pubescent. Length 1.4 to 1.6 mm. Plate X., Fig. 8o. 
Plate XII., Fig. 140. 
flead a little wider than long, finely scabrous; margin 
broad, flat, produced in front, and minutely emarginate above 
the insertion of the antennz; vertex vaulted, the crest not 
more than indicated, the lateral fovez small, deep and nude. 
In the ¢ the front is declivous anterior to the interantennnal 
line. Antenne, 2, half the length of the body the first joint 
cylindrical; second to eighth gradually smaller and rounded; 
ninth much larger than the eighth and irregularly transverse, 
toothed outside; tenth larger, globose; the eleventh not as 
thick, but more than twice as long, straight inside, convex 
outside, with a large tooth inside of the base, which is turned 
backwards. 9, antennal joints regular, the last joint not as 
long as the two preceding ones, regularly acute-ovate, not 
toothed. Prothorax little longer than broad, punctured; the 
impressed longitudinal lines fine, sharply cut; the basal fovea 
small but conspicuous; the basal tubercle and the linear discal 
crests not prominent but easily discernible. A/ytva very con- 
vex, punctured, longer than broad; shoulders blunt, discal 
lines none, sutural line straight, the interval darker, sculptur- 
ed. The abdominal dorsal basal impressions are deep, nearly 
equal; elytra in the female less deeply punctured. Legs deep 
orange, punctured; the spur of the posterior tibia is very long 
in perfectly preserved specimens, but may be broken or 
entirely lost in others. 
‘Habitat. Country along the Ohio river. 
B. scaBRIcEps, Lec. Piceous, legs, antenne, and _ palpi 
paler. Length 1.9 mm. Plate X., Fig. 86. Plate XII., Fig. 
£35. 
Head scabrous, broader than long; vertex slightly convex, 
carinate on the occiput, with the sulcus very faint, or indicated 
