BEMBIDIIKLE 137 



metallic lustre, faintly and nubilously pale laterally toward base, 

 at the extreme apex and more distinctly in a biarcuate fascia near 

 apical fourth; under surface black, the legs piceous or nearly black; 

 head rather small, scarcely three-fourths as wide as the prothorax, 

 with moderate, very convex eyes and strong parallel sulci; antennae 

 piceous, with black basal joint, rather heavy, three-fourths as long 

 as the elytra, the medial joints not quite three times as long as wide; 

 prothorax nearly one-half wider than long; base narrower than the 

 apex, fully three-fourths the maximum width; sides strongly, sub- 

 evenly rounded, barely visibly sinuate basally, the angles minutely 

 subprominent; impressions subobsolete; foveae broadly impressed, 

 shallow and rugose, the carina strong, moderately long; elytra ob- 

 long, nearly three- fifths longer than wide, obtusely rounded at apex; 

 striae fine, entire, not evidently impressed and very finely punctate, 

 the punctures rather close-set; foveae near one and three fourths and 

 four-sevenths. Length (c? 9 ) 5.0-6.3 mm.; width 1.9-2.25 mm. 

 Utah (Provo and Little Salt Lake), Wickham. Nine examples. 



scudderi Lee. 



Elytra in great part pale brownish-flavate 87 



87 Prothorax subequal to the elytra in width, the upper surface moder- 

 ately convex. Form parallel; surface polished throughout, deep 

 black anteriorly, the elytra with a feeble scutellar cloud, small spots 

 at the anterior foveae, a biarcuate, slightly post-median fascia and, 

 each, a small area between this and the apex, blackish; under surface 

 black, the legs piceous, the epipleura and hypomera in great part 

 pale; head larger, fully three-fourths as wide as the prothorax, the 

 eyes moderate but prominent; sulci broad and deep; antennae fusco- 

 testaceous, three-fourths as long as the elytra, the medial joints as 

 in scudderi; prothorax slightly more than one-half wider than long, 

 otherwise as in scudderi, the sides not quite so broadly reflexed; 

 elytra oblong, parallel, nearly three-fifths longer than wide, in form 

 and convexity almost as in scudderi, except that they are only very 

 little wider than the prothorax and the surface is more shining; 

 striae entire, not quite so fine and more impressed, the punctures 

 not so minute, distinct and more widely separated; foveae appar- 

 ently similar. Length (9) 5-6 mm.; width 2.0 mm. Colorado 



(Colorado Springs), Wickham consimile Hayw. 



Prothorax much narrower than the elytra; upper surface strongly de- 

 pressed. Form oblong-elongate; lustre shining, black, the anterior 

 parts with bright green reflections in the depressions and anterior 

 and posterior rugosities of the pronotum; elytra with black macu- 

 lation almost as in the preceding, except that the fascia is more 

 post-median, the concavity along the margin black, with green lustre 

 medially; under surface black, with greenish lustre, the legs and epi- 

 pleura rufous; head nearly as in consimile, the testaceous antennae 

 shorter and thicker, the medial joints twice as long as wide; prothorax 

 two-fifths wider than long, the general outline as in the two preceding, 

 except that the sides are less broadly rounded before the middle and 

 become distinctly sinuate basally, the angles sharp, right and sub- 

 prominent, the sides of the base more oblique; basal impression much 



