BEMBIDIIN.E icy 



conspicuously sinuate basally, sometimes almost parallel for some 

 distance before the angles; impressions smooth, the anterior scarcely 

 traceable, the posterior distinct; foveae short, deep, linear, the carina 

 much longer and strong; elytra two-fifths wider than the prothorax, 

 the striae moderate, feebly impressed, feebler than in fenisex and 

 more finely punctate, the punctures rather rapidly strong basally; 

 foveae at two and four sevenths. Length (cf 9 ) 3-8 mm.; width 

 1.4 mm. Rhode Island, Xew York and Pennsylvania to Iowa and 

 Lake Superior posticum Hald. 



Form broader, a little larger in size, similar in coloration, the anterior 

 parts rather opaque; elytra more maculate, having on each a basal 

 spot, a fascia on intervals five to eight near basal third, two short 

 lines on the third interval before and behind the fovea, a fascia 

 near posterior third from the fourth interval to the margin, and the 

 apex, pale; legs rufous; head not quite so large as in fenisex, nearly as 

 in posticum, fully three-fourths as wide as the prothorax, the anten- 

 nae rather longer than in posticum, similarly colored, the medial 

 joints three times as long as wide, or very nearly; prothorax narrower, 

 two-fifths wider than long, smaller and narrower when compared 

 with the elytra than in posticum, otherwise nearly similar, the sides 

 distinctly sinuate at base; elytra broader, with finer and almost un- 

 impressed striae, distinctly punctate basally, one-half wider than the 

 prothorax; foveae fine, similarly placed. Length (cf 9 ) 4.0-4.25 

 mm.; width 1.351.55 mm. Indiana and Wisconsin (Bayfield). 



plectile n. sp. 



Form nearly as in posticum but with the prothorax smaller, and differing 

 from that or any of the three preceding in being widest near anterior 

 third, where the sides are well rounded, thence oblique and nearly 

 straight posteriorly, becoming just visibly and very broadly sinuate; 

 color and maculation nearly as in posticum, except that there are 

 more anterior elytral spots, these being almost exactly as in plectile; 

 legs obscure rufous; head nearly four-fifths as wide as the prothorax, 

 with very abruptly and conspicuously prominent eyes; antennae 

 nearly as in posticum, the medial joints not quite three times as 

 long as wide; prothorax less than one-half wider than long, equally 

 wide at base and apex, the angles slightly obtuse but sharp; margins 

 moderately reflexed; impressions nearly obsolete, the foveae and car- 

 ina as in the preceding species; elytra in outline, strong striation 

 and rather strong close-set punctures, almost exactly as in fenisex, 

 the prothorax, however, entirely different; the elytra here are about 

 one-half wider than the prothorax. Length (cf ) 3-9 mm.; width 

 1.35 mm. A single specimen, without indication of locality but un- 

 doubtedly from somewhere in the Atlantic regions, .mediocre n. sp. 



37 Antennae longer and more slender, the medial joints between two 

 and three times as long as wide; surface more convex. Body oblong- 

 oval, noticeably convex, black, the anterior parts somewhat green- 

 ish and more or less alutaceous; elytra with more pallid maculation 

 than in any of the preceding, this about equaling the black in area, 

 the basal spot, apex and two fasciae situated as usual, also with two 

 elongate spots in the usual situation on the third interval; under 



