110 Trans. Acad. Sci. of St. Louis. 



toward the sides as usual; elytra quadrate, a third wider and a fifth 

 longer than the prothorax, the punctures rather fine but distinct and 

 somewhat close-set. Male with sexual characters nearly as in rubripennis , 

 the third ventral narrowly and just visibly impressed along the middle, 

 the fourth less narrowly and more strongly, the fifth still more strongly 

 though not deeply, the sixth convex, more densely pubescent as usual 

 toward the middle and apex, the latter very broadly and obtusely 

 bilobed, the lobes separated by a broad shallow and acutely cuspidiform 

 emargination ; female not known. Length 6.8 mm.; width 1.2 mm. 

 New York (near the city) agitans n. sp. 



Body nearly similar in form but larger; head longer than wide, finely, 

 rather closely punctate toward the sides, the latter converging and 

 nearly straight for only the length of the large eyes behind them, then 

 broadly arcuate across the base; antennae in the female as long 

 as the head and prothorax, moderately slender, the medial 

 joints fully twice as long as wide; prothorax rather broad, much 

 wider than the head, about a fifth longer than wide, the sides parallel 

 and broadly arcuate, the punctures only moderately coarse but deep 

 and rather close-set; elytra quadrate, fully as long as wide, parallel, 

 about a third wider but only very slightly longer than the prothorax, 

 the punctures fine, rather feeble and closer than usual; abdomen 

 sligh,tly narrower than the elytra. Male unknown; female with a nar- 

 row produced and evenly rounded apical lobe of the sixth ventral, the 

 surface with a distinct narrow impression along the median line just 

 behind the middle, extending only to the base of the lobe. Length 

 7.5 mm.; width 1.25 mm. Texas (Austin) tetricus n. sp. 



14 — Head in the female broadly truncate and arcuate at base, subequal in 

 width to the prothorax. Body moderately slender, deep black through- 

 out the body, legs and antennae, the tarsi slightly paler; head broad, 

 barely as long as wide, the sides parallel and nearly straight for the 

 length of the eye behind the latter, then moderately broadly rounded 

 through the basal angles, the base feebly arcuate ; eyes moderate, at nearly 

 twice their own length from the base, the punctures very fine; antennae 

 longer than the head and prothorax, the medial joints about two-thirds 

 longer than wide; prothorax rather small and broad, but little longer 

 than wide,just visibly wider than the head, parallel and feebly arcuate at 

 the sides, the punctures moderately coarse, strong and somewhat close- 

 set; elytra parallel, slightly elongate, rather strongly and moderately 

 closely punctate, two-fifths wider and two-fifths longer than the pro- 

 thorax; abdomen distinctly narrower than the elytra. Male not at 

 hand; female with the sixth ventral broadly rounded and feebly lobed 

 at tip, not impressed. Length 6.0 mm.; width 1.05 mm. Vancouver 

 Island flnitimus Lee. 



Head in both sexes semicircularly rounded at base, the species smaller 

 and narrower in form 15 



15 — Eyes smaller, situated at about twice their own length from the 

 Ijase — measured on the median line. Body rather narrow, intense 

 black throughout, the legs and antennae concolorous, the tarsi piceous- 

 black; head slightly elongate, broadly arcuate from the eyes through 

 the base, becoming nearly parallel for fully the length of the eye be- 



