BEMBIDIIN/E 177 



thirds as wide as the prothorax, the eyes very moderate in size and 

 prominence; frontal sulci obsolete; antennae three-fifths as long as 

 the elytra, nearly as in the preceding, the joints rather shorter, the 

 sixth less than twice as long as wide; prothorax much smaller, two- 

 fifths wider than long, widest barely before the middle, the sides 

 broadly rounded, straight basally, moderately reflexed; base much 

 wider than the apex; median part of the subbasal sulcus with three 

 large punctures, not always clearly defined; foveae small but rather 

 deep; medial stria imperfect and extremely feeble; elytra three-fifths 

 longer than wide, two-fifths wider than the prothorax, more rapidly 

 arcuately ogival in apical third; humeri gradually rounding; foveae 

 near basal third and three-fiftlas; discal recurvature of the sutural 

 stria at apex really the sulcate apical part of an obsolete fifth stria 

 close to the margin. Length 2.0-2.4 mm.; width 0.8 mm. Cal- 

 ifornia (Siskiyou, and to the southward), Nevada (Reno), Arizona 

 and one example labeled Texas (El Paso), Dunn rapax Lee. 



5 Form narrowly suboval, convex, polished, flavo-testaceous; head less 

 than two-thirds as wide as the prothorax, with very small and dis- 

 tant anterior frontal sulci; eyes moderate but prominent; antennae 

 three-fifths as long as the elytra, slender, flavate, incrassulate and 

 slightly fuscous distally, the sixth joint fully twice as long as wide; 

 prothorax a third wider than long, widest evidently before the mid- 

 dle; sides anteriorly rounded, becoming very broadly and just visi- 

 bly sinuate basally, finely but strongly reflexed; base evidently 

 wider than the apex; subbasal sulcus fine, with a row of regular 

 punctures, broken at the middle, where there is a single puncture 

 on the median line; foveae small, remote from the angles; elytra two- 

 thirds longer than wide, very gradually acutely ogival behind, three- 

 sevenths wider than the prothorax, the foveae small, near basal and 

 before apical third. Length 2.1-2.35 mm.; width 0.7-0.78 mm. 

 Arizona (Yuma), Utah (southwestern) and Texas (Laredo). 



audax Lee. 



Form elongate-suboval, convex, polished, flavo-testaceous; head scarcely 

 two-thirds as wide as the prothorax, with obsolete sulci and moder- 

 ate, rather prominent eyes; antennae very slender, barely three- 

 fifths as long as the elytra, evenly filiform, the last three joints ab- 

 ruptly somewhat wider; prothorax two-fifths wider than long, widest 

 at two-fifths from apex, the sides moderately rounded, straight bas- 

 ally; base evidently wider than the apex; fine subbasal sulcus with 

 an even series of punctures, rather widely broken medially, with a 

 single moderate puncture on the median line; foveae small, remote 

 from the angles, the carina of which is very evident though short; 

 elytra three-fifths longer than wide, two-fifths wider than the pro- 

 thorax, rather obtusely ogival behind, the sides very gradually 

 rounding toward the humeri; foveae distinct, near basal and slightly 

 before apical third. Length 2.2-2.5 mm.; width 0.75-0.85 mm. 

 Indiana, \Yisconsin and Missouri dolosa Lee. 



6 Pronotum with three medio-subbasal punctures, generally rather well 



defined 7 



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



