THE PsELAPHID@ OF NorTH AMERICA. 2847 
interval between the sutural striz of the elytra; behind the 
intermediate coxe on the metasternum is a deep, sharply 
defined fovea. ¢ antenne longer, elytra less convex, punc- 
tuation and pubescence stronger, intermediate tibiz spurred, 
first ventral near the posterior margin transversely impressed, 
last ventral with a somewhat transverse, nearly circular, well 
defined, but not deep impression. Length, 1.5 mm. 
Habitat. Canada. Differentials are: the strong punctua- 
tion, the long, divergent and very approximate abdominal 
striz. 
B. GEMMIFER, Lec. Ferruginous to red-brown or darker, 
pubescence very fine and short. Head from base to frontal 
margin as long as the width across the tempora, impunctate, 
except on the antennal tubercles, foveee equal in size, small, 
mutually twice as distant as either from the eye and in a line 
with them; frontal margin slightly convex, antenna] tubercles 
small, but well defined, space bearing the frontal fovea slightly 
concave. Eyes longer than the tempora, gemmate. <Axten- 
n@ half as long as the body, second joint as long as the first, 
not as thick; third longer than the second, obconical-cylin- 
drical, thinner; third to seventh cylindrical, subequal; eighth 
as thick as the seventh, of equal dimensions; ninth little longer 
and thicker, obconical; tenth subglobular, larger; eleventh 
nearly double as thick as the tenth, in length equal to the 
three preceding conjointly, from the middle strongly conical 
and somewhat oblique. Prothorax more convex than in B. 
rubicunda; middle fovez small, deep, conspicuous, lateral ones 
not larger than the occipital fovez, not fully in view from 
above, and situated one-third from the base. Disk conspic- 
uously punctulate (magnified thirty diameters); base double 
‘as wide as the anterior margin. /ytra across the shoulders 
wider than the prothorax, sides arcuate behind the middle, 
where the disk is one-fourth wider than the length of the 
suture, convex; tip and sides very declivous, posterior margin 
laterally slightly sinuate. Disk (magnified sixty diameters) 
scarcely perceptibly punctulate, except on the posterior decliv- 
