THE PsELAPHIDZ OF NortTH AMERICA. | 281 
impressed. Second segment prolonged in the form of a tra- 
pezium, sides slightly emarginate, tip transverse, half as wide 
as the base, which is deeply concave, a dark cavity visible in 
the emargination of the first segment. Surface of the pos- 
terior segments perpendicular. 
Habitat. Maryland, Virginia. 
B. LuinorEensis, Grendel. Dark piceous, elytra red-brown, 
antenne piceous-brown, legs and palpi dull brownish-yellow, 
faintly punctate. Length, 1.7mm. Plate VIII, Fig. 55. 
FHfead with the occipital fovez rather large, very near to the 
eye, frontal margin arcuate in the middle. - Aztenne@ less than 
one-half as long as the body, first joint large, cylindrical; 
second smaller, rounded, third to eighth still smaller than the 
second, equal in thickness, subequal in length; eighth sub- 
globular, ninth obconical, longer, tenth twice as wide as the 
eighth, trapezoidal, the eleventh oblong-ovoid, twice as thick 
as the ninth. Prothorax punctulate, visibly wider than long, 
the greatest width being attained at the middle, where it 
exceeds that of the head, convex, the lateral fovez in nearly 
full view from above. Z&/ytra punctulate, one-third longer 
. than the prothorax, the width at the shoulders equal to the 
sutural length. Across the tip they are one-fifth broader. 
Shoulders moderately prominent, sutural and discal lines 
parallel, the latter deep near the base, convergent behind the 
middle, and abbreviated one-fifth from the tip. Addomen with 
the first dorsal one-third as long as wide, the carinz including 
more than one-third of the segmental width, and extending 
along one-fourth of the length. ¢ first dorsal produced behind 
into two acutely-pointed triangular lobes, depressed laterally 
from the apex to the basal marginal angle. Between the two 
cusps is a declining, posteriorly depressed, nearly level sur- 
face. Second segment arcuately produced, depressed at the 
base, and with a large punctate median fovea. Legs slender, 
the posterior tibize with a long terminal spine, the intermediate 
trochanters with a small sharp one. 
