300 NaturaL History BuLueEtin. 
lateral foveze small, impressed on the sides, median fovea 
elongate. /yira three-fourths longer than the prothorax, 
wider than the prothorax near the shoulders and twice as 
wide near the tips; discal lines fine, slightly impressed, sutural 
lines straight, parallel. Addomen elongate, carine divergent, 
enclosing not quite one-third of the segmental width. Pos- 
terior tibiz slightly dilated. 
Habitat. Mendocino county, California. Resembles in 
description Leconte’s B. sudtzles. 
B. DEFORMATA, Lec. Dark piceous-brown or black, not 
conspicuously, very indistinctly punctulate, pubescence very 
fine, inconspicuous, elytra, legs and palpi red, antenne dark 
piceous-red. Length, 1.2 mm. 
Ffead finely pubescent, much wider than long, the disk of 
the vertex nearly quadrate, eyes coarsely facetted, tempora 
slightly arcuate, convergent, occiput longitudinally convex, 
frontal margin straight; between the rectangular, very slightly 
elevated supra-antennal tuberculations and near the frontal 
margin, transversely impressed, is the fovea, an indefinite 
acupuncture in ¢; occipital fovez small, in a line through the 
middle of the eyes, mutually more than four times as distant 
as either from the eye, with a shallow sulcation or opening 
anteriorly. Axfenne not straight (¢), joint first short, quad- 
rate, robust; second sub-guadrate for one-half of the first, 
thicker, outside nearly straight, inside hemispherical, enlarged, 
deeply foveate beneath; third and fourth transverse, sub-len- 
ticular, much narrower than the first; fifth, sixth and seventh 
subequal, decreasing in width; fifth slightly wider than the 
first joint, all transversely lenticular; eighth smallest, obliquely 
trapezoid, outside longer, transverse; ninth and tenth grad- 
ually larger, regular, trapezoid, connate with the base of the 
eleventh, which latter is as thick as the second, obliquely 
pointed inward, externally arcuate, inside sinuate at the base, 
thence straight to the tip. In the female the antennz are 
similar, curved, with simple joints, second joint smaller than 
first; second to seventh subequal, longer than wide, obconical; 
