BEMBIDIIN^E 15 



coarsely punctate, the eighth finer than the seventh and with very 

 fine punctures; dorsal foveae just before the middle and at apical 

 third to fourth. Length (cf 9 ) 5.0-5.3 mm.; width 1.8-2.1 mm. 

 Indiana, Iowa and Kansas americanum Dej. 



Body stouter, oblong, slightly convex, alutaceous, greenish-aeneous above, 

 the under surface and legs as in americanum; antennae similar in 

 coloration and length but notably more slender, the ninth joint 

 three times as long as wide; head large, with very large prominent 

 eyes, four-fifths as wide as the prothorax, which is fully two-thirds 

 wider than long, with rounded sides, becoming oblique and nearly 

 straight posteriorly, the angles obtuse, with their apices minutely 

 sharp and prominent; surface nearly as in the preceding; elytra ob- 

 long, parallel, very obtusely rounded at tip, less than one-half longer 

 than wide, two-fifths wider than the prothorax, the striae fine and 

 scarcely impressed, with moderate, distinct and well separated 

 punctures, the eighth fine and finely punctate; foveae not so large 

 as in bifossulatum, just before the middle and at apical fourth. 

 Length (9) 5-6 mm.; width 2.3 mm. Iowa (Keokuk) . .illini n. sp. 



4 Oblique sides of the prothorax basally nearly straight, the angles 

 very obtuse, with their apices sharply prominent; outer antennal 

 joints sensibly abbreviated, the tenth barely twice as long as wide. 

 Body almost as in bifossulatum in size and habitus, elongate-oblong, 

 rather strongly convex, shining, alutaceous anteriorly and feebly 

 laterad on the elytra; upper surface very obscure bronze, the under 

 dark metallic green; legs obscure rufous, the femora black and met- 

 allic, pale basally; antennae extending a little beyond the middle, 

 not very slender, black, the basal joint rufous beneath; head large, 

 with very prominent eyes, four-fifths as wide as the prothorax, the 

 latter nearly as in bifossulatum; elytra as in that species but not 

 quite so long and with the third and fourth intervals wider than the 

 others, the outer striae rather more strongly punctured and more 

 impressed, with convex intervals; eighth very fine and feeble and 

 feebly punctate. Length (c?) 7.0 mm.; width 2.65 mm. Califor- 

 nia (exact locality unknown) sufflatum n. sp. 



Oblique sides becoming sinuate before the basal angles, which are right, 

 sharp and very prominent, the sides of the base anteriorly oblique 

 as usual 5 



5 Prothorax very short, fully three-fifths to three-fourths wider than 

 long. Body oblong, very moderately convex, dull and alutaceous 

 (9), more shining (cf), bronze above, obscure metallic-greenish 

 beneath; legs and antennae colored as in sufflatum, the latter more 

 elongate; head similar; prothorax similar but notably shorter and 

 more transverse; elytra oblong, parallel, subcircularly rounded be- 

 hind, fully one-half longer than wide, two-fifths wider than the pro- 

 thorax; striae fine and finely, closely punctate, nowhere distinctly 

 impressed, the eighth fine but rather deep, scarcely visibly punctu- 

 late; intervals equal as usual, nearly flat; foveae large and deep, a 

 little before the middle and at apical fourth. Length (cf 9 ) 5.8- 

 6.5 mm.; width 2.2-2.5 mm - Wyoming (Cheyenne), Wickham. 



cheyennense n. sp. 



