BEMBIDIIN/E 129 



and more converging on the epistoma; antennae moderately thick, 

 fusco-testaceous, two-thirds as long as the elytra, the medial joints 

 obconic, one-half longer than wide, the second distinctly snorter 

 than the third; prothorax generally not quite one-half wider than 

 long; base three-fourths the maximum width; sides strongly rounded 

 from apex to the parallel basal part; anterior impression obsoles- 

 cent, the subbasal rather distinct, rugulose; foveae moderate in size, 

 somewhat deep, sublinear, not adjoining the rather evident but much 

 shorter carina; elytra one-half longer than wide, nearly one-half 

 wider than the prothorax; striae rather fine, just visibly impressed, 

 fine but distinct at apex, the punctures small, somewhat close-set, 

 traceable to the declivity ; foveae near basal and apical third. Length 

 (cf 9 ) 2.7-3.2 mm.; width 1.0-1.18 mm. Arizona (Tucson taken 

 by the writer and Bill Williams Fork taken by Prof. Snow). 

 Rather abundant. [Ochthedromus pictus \\ Lee.]. . .impotens n. nov. 



Elytral striae slightly abbreviated at tip; frontal sulci feebly converging 

 anteriorly 72 



72 Antennae slender, filiform, full}- three-fourths as long as the elytra, 

 the medial joints fully twice as long as wide. Body rather narrow, 

 elongate and convex, polished throughout, black and with scarcely 

 metallic lustre; elytra flavate-brown, black posteriorly, the black 

 area diminishing in width anteriorly, becoming narrow on the suture 

 in basal third; there is also a black lateral area behind the middle, 

 and the anterior fovea and the punctures of the striae are also black- 

 ish; under surface black, the inflexed sides and legs pale; head not 

 distinctly narrower than the prothorax, the antennae fusco-testa- 

 ceous; sulci very evenly convergent on the front and epistoma; 

 prothorax two-fifths wider than long; base three-fourths the maxi- 

 mum width; sides moderately rounded from apex to the parallel 

 basal part; base with some coarse sculpture, obsolete at the middle, 

 the foveae large, broadly impressed, irregularly sublinear, the carina 

 short; elytra one-half longer than wide, about one-half wider than 

 the prothorax, parallel, with arcuate sides, rapidly rounding at the 

 humeri; striae rather coarse but barely impressed, the punctures 

 strong, moderately but irregularly separated, the foveae near apical 

 and basal third. Length (a 71 ) 2.7 mm.; width 0.9 mm. Northern 

 Illinois (Highland Park) aestivum n. sp. 



Antennae shorter, with the medial joints much less than twice as long as 



wide 73 



73 Antennae clear testaceous throughout; elytra with very nubilous 



markings. Body rather short, moderately convex, blackish-piceous, 

 polished, the elytra flavate, the sutural region posteriorly with large 

 undefined darker areas, the anterior fovea minutely darker; behind 

 the middle near each side, there is also a darker patch; head barely 

 narrower than the prothorax, the sulci slightly converging; antennae 

 rather short and thick; prothorax two-fifths wider than long, much 

 narrowed at base, the latter two-thirds the maximum width; sides 

 strongly rounded, rapidly arcuato-oblique behind the middle to the 

 parallel basal part; basal impression feebly rugulose, smooth and 

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



