BEMBIDIIN.E 105 



alutaceous but less opaque than in conspersum, black, with more 

 pronounced greenish lustre; elytra shining, maculate in nearly the 

 same way; head three-fourths as wide as the prothorax or more, the 

 antennae nearly similar; prothorax larger and broader, but other- 

 wise nearly similar, except that the sides are not quite so strongly 

 rounded and are more reflexed; elytra even more elongate, nearly 

 three-fifths longer than wide, more gradually rounded and less ob- 

 tuse behind, the striae similar but somewhat more impressed and 

 with the small punctures more equal among themselves, easily trace- 

 able to the declivity and relatively less strong basally; foveae at 

 basal and apical third, the third interval relatively less broad as a 

 rule. Length (cf 9 ) 3.0-4.0 mm.; width 1.2-1.4 mm - British 

 Columbia (Kamloops and from an unrecorded locality). 



imitator n. sp. 



Form oblong-suboval, moderately convex, not very shining, black, with 

 alutaceous greenish lustre anteriorly; elytra blackish, with fasciae and 

 isolated spots nearly as in conspersum, but rather less extensive; 

 head three-fourths as wide as the prothorax, scarcely as wide as an 

 elytron, with short and rather deep sulci; antennae moderate, piceous, 

 gradually testaceous basally, the medial joints slightly more than 

 twice as long as wide; prothorax shorter than in the two preceding, 

 less than a third as long as the elytra and three-fifths wider than 

 long, the moderately rounded sides oblique but only feebly sinuate 

 posteriorly, the angles right and sharp; impressions very feeble, the 

 stria fine, not entire; foveae and surrounding surface rugulose, mod- 

 erate, the carina longer, oblique, strong and nearly a third the total 

 length; elytra barely one-half longer than wide, two-fifths wider 

 than the prothorax, parabolic behind, the parallel sides broadly arcu- 

 ate, gradually rounding at the humeri; striae rather fine, scarcely 

 impressed, the fine punctures disappearing a little behind the mid- 

 dle, those of the equally deep lateral striae continuing further pos- 

 teriorly; foveae near basal and apical third. Length (9) 3-7~3-9 

 mm.; width 1.4-1.55 mm. Utah (Provo), Wickham. 



provoanum n. sp. 



31 Body small in size, in this respect and in the sharply marked fasciae 

 of short lines, resembling the preceding species 32 



Body larger, the almost wholly pale elytra with a submedian and sub- 

 apical dark fascia 43 



32 Form oblong, not notably ventricose 33 



Form ventricose, the prothorax much narrower than the elytra, which 

 are deficient in anterior ornamentation as a rule 41 



33 Head well developed, with notably prominent eyes, as wide as an 

 elytron or wider 34 



Head noticeably small, not or scarcely as wide as an elytron 39 



34 Body subparallel, the prothorax but little narrower than the elytra. 

 Blackish, with viridi-aeneous and only feebly alutaceous lustre an- 

 teriorly, the shining elytra piceous, the anterior spots obsolete in 

 great measure, but with a yellowish posterior fascia, broadly inter- 

 rupted at the suture, the under surface piceo-rufous, the legs flavo- 

 testaceous; head nearly four-fifths as wide as the prothorax, the 



