THE PsELAPHIDa OF NorTH AMERICA. 15 
angles of the pronotum are deeply foveate. A/yira without 
visible punctures; shoulders prominent longitudinally, not acu- 
minate; sutural lines parallel, interval with a row of very 
small punctures; discal lines short, obsolete. Abdomen very 
convex, the lateral basal pits very deep, feebly punctulate. 
Sexual differences are the same as in B. zephyrinus; the ven- 
tral fovea very large, crater shaped, with evenly concave bot- 
tom. 
Habitat. Eldorado county, California. 
B. cicarricosus, Brend. Male, umber brown, elytra, legs, 
and last joint of the antenne red, pubescence long. Length 
pomm. Plate X., Fig. 33. 
Head quadrate, carinate at the sides over the eyes; vertex 
moderately convex, the carina of the collar scarcely continued 
to the base of the occiput, in the center inconspicuously com- 
pressed and surrounded by a deep sulcus, which is posteriorly 
continued to the base, running straight forward outside of the 
deep, nude, fovea, and connects with the sulcus of the other 
side by the deep transverse portion of the frontal impression; 
the border separated by the sulcus is coarsely but not densely 
punctured; front continuously declivous with the clypeus. 
Eyes rather prominent, small, with a lunate base. Antenne 
as long as the head and thorax together; first joint cylindrical, 
concave above, convex beneath, deeply emarginate above at 
the tip; second shorter, as thick as the first, oval, longer than 
wide; third to eighth sub-equal, conico-cylindrical, inconspic- 
uously longer than wide; ninth and tenth not longer but 
gradually wider, slightly transverse; eleventh nearly as long 
as the three preceding together, scarcely truncate at the base, 
with a tooth proceeding from the distal third, which, however, 
is not erect; pubescence long. Prothorax impunctate, widest 
across the anterior third; slightly longer than wide; sides 
irregularly sinuate behind, basal margin elevated in the shape 
of a sharp transverse carina; discal median sulcus a conspicu- 
-ous, merely impressed line, originating in the deep, nude, 
