BEMBIDIIN^E 193 







setulose; antennae piceous, moderately slender, four-fifths as long 

 as the elytra, the medial joints not quite twice as long as wide, the 

 third shorter than the second and obconic; prothorax two-fifths 

 wider than long, widest near apical third; base much narrower than 

 the apex; sides anteriorly strongly rounded, very finely reflexed, 

 oblique and broadly sinuate thence to the obtuse and rounded, 

 strongly reflexed basal angles; transversely angulate entire subbasal 

 furrow shallow and impunctate; stria broadly impressed between 

 this and the very feeble anterior impression; elytra almost three- 

 fifths longer than wide, not quite one-half wider than the prothorax, 

 parallel, circularly rounded at tip, each with three rather distinct 

 striae; foveae at basal third and apical fifth or sixth. Length 1.5- 

 1.8 mm.; width 0.55-0.75 mm. California (coast regions north of 

 San Francisco and at Truckee) and Nevada (Reno and Elko). 



edax Lee. 



Form oblong, slightly broader and larger, feebly convex, the coloration 

 similar; head two-thirds as wide as the prothorax, the eyes moderate 

 and rather convex; sulci shallow and anterior; antennae piceous, 

 paler basally, rather thick, three-fourths as long as the elytra, the 

 medial joints barely twice as long as wide; prothorax nearly one-half 

 wider than long, widest near apical third; base as wide as the apex; 

 sides rounded anteriorly, oblique and broadly, feebly sinuate behind 

 the middle, finely reflexed, broadly and more strongly at the obtuse 

 and slightly blunt hind angles; transverse subbasal furrow deep but 

 not punctate; median stria very fine; elytra oblong, nearly one-half 

 longer than wide, two-fifths wider than the prothorax, parallel, with 

 arcuate sides, very abruptly rounded at the distinct humeri; sutural 

 stria rather deep and the second feeble, the third barely traceable; 

 foveae as in the preceding. Length 1.75-2.1 mm.; width 0.7-0.8 

 mm. Texas (Galveston) and Arkansas umbripennis Chd. 



3 Antennae rather shorter and stouter, somewhat as in the preceding, 

 never as long as the elytra, the medial joints never distinctly more 

 than twice as long as wide and frequently less 4 



Antennae longer and more slender, the medial joints generally about 

 three times as long as wide 6 



4 Color rufo-testaceous, the head dusky. Form rather short and stout, 

 moderately convex, subalutaceous; legs more flavate; head large, 

 with very prominent eyes, more than three-fourths as wide as the 

 prothorax, the sulci rather deep, parallel; antennae flavate, four- 

 fifths as long as the elytra, the second joint fully one-half longer 

 than the obconic third, the medial joints slightly more than twice 

 as long as wide, the tenth correspondingly less; prothorax fully four- 

 fifths wider than long, widest near apical third; base as wide as the 

 apex; sides anteriorly strongly rounded, oblique and barely percep- 

 tibly sinuate posteriorly, the angles moderately reflexed, very ob- 

 tuse but with the apex minutely subprominent; subbasal angulate 

 sulcus rather deep; elytra short, only a third longer than wide, less 

 than one-half wider than the prothorax, rapidly very obtusely 

 rounded behind, the humeri obtuse but distinct; pedicel not two- 

 T. L. Casey, Mem. Col. VIII, Oct. 1918. 



