BEMBIDIIN.E 1 1 1 



than in dorsale; elytra shorter and broader, less than one-half longer 

 than wide and fully three-fourths wider than the prothorax; striae 

 coarse and deeply impressed, coarsely and conspicuously punctate 

 toward base, the punctures extinct rather before the second fovea; 

 third interval more decidedly wider than the others; fovese more 

 widely separated, near basal and apical fourth. Length (d 71 9 ) 4.6 

 -5.5 mm.; width 1.8-2.2 mm. Pennsylvania (Harrisburg and Pitts- 

 burgh) and Indiana. Fifteen examples. [Bemb. postfasciatum Ham.]. 



variegatum Say 



42 Sides of the prothorax oblique but not at all sinuate basally 43 



Sides of the prothorax becoming feebly, though evidently, sinuate for a 

 very short distance before the basal angles 44 



43 Body deep black, convex, polished throughout, with feeble subaen- 

 eous lustre; legs black, the coxse piceous; head moderate, with large 

 eyes, two-thirds as wide as the prothorax, the sulci narrow and deep, 

 parallel, outwardly curved and extinct posteriorly; antennae rather 

 thick, black throughout, not three-fourths as long as the elytra, 

 the medial joints twice as long as wide; palpi black; prothorax large, 

 a third wider than long; base rather wider than the apex; sides very 

 evenly and distinctly rounded, the basal angles obtuse but not 

 rounded, the apical bluntly rounded; margins evenly and moderately 

 reflexed; impressions subobsolete, the stria extremely fine; fovese 

 moderate, rather deep, finely rugulose, much longer than the carina, 

 .which is very short, fine and feeble; elytra nearly three-fifths longer 

 than wide, parallel, circularly rounded at tip, only a third wider 

 than the prothorax, the sides very gradually rounding basally; striae 

 entire, fine and rather feeble, unimpressed, the seventh evident; 

 punctures fine and rather well separated, traceable well behind the 

 middle; fovese small, before basal and behind apical third. Length 

 (d 71 9 ) 4.5-5.2 mm.; width 1.6-1.9 mm. Utah (Provo), YVickham. 



obtusangulum Lee. 



Body much smaller and more slender, but similar in coloration and 

 lustre throughout, the legs differing in being piceo-rufous; head and 

 antennse nearly similar, the prothorax shorter and more transverse, 

 two-fifths wider than long, otherwise as in obtusangulum, except 

 that the carina at the hind angles is longer, a fourth or fifth the total 

 length; elytra fully three-fifths longer than wide, only a fourth or 

 fifth wider than the prothorax, more gradually rounding behind, the 

 parallel sides broadly arcuate throughout and, medially, not so 

 straight as in the preceding; punctures and striation nearly similar; 

 fovese at basal and apical fourth. Length (cT) 3.7 mm.; width 1.25 

 mm. Washington State cornix n. sp. 



44 Body larger and stouter, subparallel, convex, black, the legs rufo- 

 piceous; surface polished throughout, with scarcely any metallic 

 lustre above; head well developed, with deep sulci; antennse piceous, 

 dark rufous basally, rather thick, two-thirds as long as the elytra, 

 the medial joints obconic, barely twice as long as wide; prothorax 

 one-half wider than long, equally wide at base and apex, the sides 

 subevenly and strongly rounded to the small feeble basal sinus, 

 the angles sharp and somewhat prominent; margins not broadly 



