212 Trans. Acad. Sci. of St. Louis. 
pubescence throughout short, fine, decumbent and moderately abundant; 
head longer than wide, finely but strongly, closely punctate, the punc- 
tures especially dense toward base and sides; eyes rather small but 
convex and prominent, at more than twice their own length from the 
extreme base, the sides behind them parallel for a short distance, then 
broadly rounding into the semicircular base, which is somewhat sub- 
truncate toward the middle especially in the female; front between the 
antennal tubercles broadly,strongly impressed; antennae slightly shorter 
than the head and prothorax, moderately slender, feebly incrassate, the 
cylindric basal joint much longer than the next'two, the succeeding three 
decreasing slowly in length; prothorax nearly a third longer than wide, 
distinctly although not very greatly narrower than the head, widest 
near the middle, the sides subparallel and broadly arcuate, rapidly con- 
verging and becoming just visibly sinuate in anterior fourth to the very 
narrow neck, the punctures sparse, very fine, more distinct and feebly as- 
perate toward base; elytra nearly a fourth longer than wide, very much 
wider than the head, two-fifths wider and a fourth longer than the pro- 
thorax, parallel, the punctures close-set, larger than those of the head 
and rather strongly asperate; abdomen parallel, slightly narrower than 
the elytra; legs moderately short and rather slender. Male with a 
broadly oval deep aud distinctly though not acutely limited oval impres- 
sion, occupying median third of the fifth ventral and extending almost to 
the base, its floor shining and having, posteriorly, a suberect acutely 
triangular process; posterior margin of the segment with a large, sub- 
quadrate emargination, the acute and subparallel sides of which are in 
great part formed by acute processes in prolongation of the sides of the 
impression, the emargination as deep as the length of the impression 
before it; sixth segment with a large oval impression having a flat floor, 
the apical margin with a simple rounded sinus about three times as wide 
as deep; middle tibiag nearly as in brunnipes. Length 3.2 mm.; width 
0.66 mm. Massachusetts, — Mr. F. Blanchard.........puritana 0. sp. 
Body shining, black in color, almost similar to puritana, except that the 
head is evenly and semicircularly rounded at base and not broadly sub- 
truncate toward the middle and more obviously elongated, with the 
punctures of the head and prothorax rather more close-set and the 
transverse impressions at the base of the abdominal segments more 
pronounced; form very slightly less slender. Maleunknown. Length 
3.3 mm.; width 0.68 mm. California (Contra Costa Co.). 
rotundiceps Csy. 
4 — Form, color and sculpture nearly similar to brunnipes but more slender 
and elongate, the legs piceous-brown throughout; head narrower and 
more elongate, the sides straight and parallel for half the distance from 
the eyes to the extreme base, measured longitudinally, then almost 
evenly and semicircularly rounded, feebly subtruncate toward the middle 
of the base; prothorax only just visibly narrower than the head; elytra - 
narrower and more elongate, the sides parallel. Male having secondary 
sexual characters nearly similar to those of brunnipes, except that the 
prolongations of the apex of the fifth ventral— forming the sides of 
the large subquadrate emargination — are flexed more strongly inward 
toward tip, that the large oval flat impression of the sixth segment is 
