BEMBIDIIN/E 127 



Elytra with a clearly defined external subapical spot, more or less broadly 

 connected along the margin with the large apical pale area 67 



67 Form oblong-suboval, moderately convex, black, shining, the ante- 

 rior parts greenish and more or less alutaceous; under surface black, 

 the abdomen partly rufous, the legs piceous; epipleura blackish; 

 head large, with very prominent eyes, five-sixths as wide as the pro- 

 thorax, the sulci short, slightly converging; antennae fuscous, paler 

 basally, the medial joints about two and one-half times as long as 

 wide; prothorax nearly one-half wider than long, the base evidently 

 narrower than the moderately sinuate apex, widest at apical two- 

 fifths, the sides strongly rounded, oblique and straighter posteriorly, 

 gradually becoming feebly sinuate near the angles, which are scarcely 

 more than right and very sharp; impressions very feeble, the stria 

 extremely fine though subentire; foveae small, oblong, deeply im- 

 pressed, the carina moderate, fine; elytra three-fifths longer than 

 wide, two-fifths wider than the prothorax, rather gradually round- 

 ing behind; striae somewhat fine, groove-like, unimpressed, the punc- 

 tures small but distinct except behind the middle, close-set; foveae 

 near two and four sevenths. Length (d 71 9 ) 3-35~4-5 mm.; width 

 1.25-1.6 mm. Minnesota (Duluth), Michigan (Marquette), Ne- 

 braska (Malcolm), Missouri (St. Louis) and Texas (Dallas, Waco 

 and Austin). Very abundant sociale n. sp. 



Form, coloration and lustre almost similar, a little narrower; abdomen 

 more rufescent, the legs clearer rufous; head not quite so large, three- 

 fourths as wide as the prothorax or more, with very prominent eyes 

 and rather longer neck, the sulci longer and parallel; antennae nearly 

 similar; prothorax smaller, one-half wider than long, nearly similar 

 in outline and surface, except that the base is barely visibly narrower 

 than the apex and the carina at each hind angle longer, being fully 

 a fourth the total length and more strongly elevated; elytra narrower, 

 one-half longer than wide, gradually rounded behind, two-fifths 

 wider than the prothorax, the striae similarly fine but evidently im- 

 pressed, at apex not very fine as in sociale but notably impressed; 

 punctures distinct, especially toward base, the fovese near basal and 

 apical third. Length (cf) 3.4 mm.; width 1.25 mm. Texas (El 

 Paso). A single specimen, taken by the writer. . . .negligens n. sp. 



Form more parallel, narrow, very moderately convex, similar in color- 

 ation, the legs testaceous; head large, four-fifths as wide as the pro- 

 thorax, with very prominent eyes, the sulci as in sociale; antennae 

 also nearly as in that species; prothorax larger, almost as wide as 

 the elytra, though nearly similar in outline and surface, more trans- 

 verse, three-fifths wider than long, the carina long as in negligens; 

 elytra elongate-oval, with parallel and arcuate sides, very gradu- 

 ally narrowing and rounded at apex, three-fifths longer than wide, 

 scarcely a third wider than the prothorax, the striae rather fine, 

 groove-like and unimpressed throughout, the punctures moderately 

 separated, gradually strong basally but almost completely obsolete 

 behind the middle; foveae near basal and apical third. Length (cf) 

 3.6 mm.; width 1.3 mm. Arizona (probably southern). 



fugitans n. sp. 



