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 and 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 emarginatiou, the acute and subparallel sides of which are in 

 great part formed by acute processes in prolongation of the ^ides of the 

 impression, the emarginatiou 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 tibiaie nearly as in brunnipes. Length 3.2 mm.; width 

 0.66 mm. Massachusetts, — Mr. F. Blanchard pnritana n. 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 aljdominal segments more 

 pronounced; form very slightly less slender. Male unknown. 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 longitudinallyj 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 emarginatiou — are flexed more strongly inward 

 toward tip, that the large oval flat impression of the sixth segment is 



