BEMBIDIIX/E 109 



slightly wider than the others; foveae near basal and apical third. 

 Length (cf) 3.7 mm.; width 1.35 mm. Colorado (Boulder Co.). 



retractum n. sp. 



39 Sides of the prothorax deeply sinuate just before the angles, which 

 are acute and somewhat prominent; elytral striae strong apically as 

 well as discally. Form rather broad and convex, black, shining, 

 the anterior parts somewhat alutaceous and greenish; elytra with 

 two minute spots on the third and one on the fifth interval near an- 

 terior third, each also with an oblique external fascia near apical 

 third and the apex, indefinitely, pale; legs pale piceo-flavate; head 

 large, with prominent eyes and rather deep sulci; extending obliquely 

 outward behind, four-fifths as wide as the prothorax and wider than 

 an elytron; antennae fuscous, paler basally, slender, the medial joints 

 nearly three times as long as wide; prothorax barely one-half wider 

 than long, the sides subprominently rounded just before the middle, 

 oblique posteriorly to the rather abruptly formed sinus; impressions 

 very feeble, the stria short and fine; foveal region rugulose, the foveae 

 short, deep, linear, scarcely more than half as long as the strong 

 carina; elytra nearly one-half longer than wide, a little less than one- 

 half wider than the prothorax and obliquely ogival in apical third; 

 striae not very fine, deep and conspicuous but not impressed, the 

 punctures close-set and strong basally, disappearing slightly behind 

 the middle; foveae near basal and apical third. Length (cf ) 3-6 mm.; 

 width 1.4 mm. Illinois (Highland Park) exclusum n. sp. 



Sides of the prothorax arcuately oblique behind, becoming gradually and 

 faintly sinuate just before the angles, which are right; striae feebler 

 on the declivity 4 



40 Body stout, moderately convex, subopaque anteriorly, the elytra 

 rather shining, black, the elytra without anterior pale markings, 

 except a nubilous streak on the eighth interval and a shorter one 

 on the seventh, each also with a nubilous external spot near the 

 apex, the latter also pale; legs rufous, the femora slightly infuscate, 

 except at apex; head rather large, with prominent eyes, the sulci 

 moderately deep; antennae rather long, slender, blackish, rufous 

 basally beneath, the medial joints between three and four times as 

 long as wide; prothorax one-half wider than long, the sides somewhat 

 evenly and strongly rounded, widest just before the middle; entire 

 surface rather dull, the anterior impression subobsolete, the pos- 

 terior distinct, the stria fine, incomplete; foveae short, deep, the car- 

 ina twice as long, strong; elytra slightly less than one-half longer than 

 wide, nearly one-half wider than the prothorax, obtusely rounded 

 behind; striae fine, unimpressed, the punctures distinct basally, 

 gradually extinct at the declivity; foveae near basal and apical third. 

 Length (9 ) 4.2 mm.; width 1.7 mm. Missouri (St. Louis). 



intermedium Kirby 



Body almost similarly stout, rather convex, shining, the anterior parts 

 alutaceous but not so dull as in the preceding; elytra each with a 

 small basal spot, a long streak on the eighth interval, shorter ones 

 on seven to five, forming a feeble fascia, and with a large, internally 

 attenuate subapical fascia and a large apical area, pale; legs bright 



