BEMBIDIIN.E 151 



joints slightly more than twice as long as wide; prothorax two-fifths 

 wider than long, the sides evenly and strongly rounding in about 

 apical, strongly converging and straighter in basal, half, the angles 

 obtusely subprominent; base half the maximum width, the line of 

 punctures before the bead feeble; foveae rather small; carina rather 

 more distinct than usual; elytra slightly more than one-half longer 

 than wide, two-fifths wider than the prothorax, parallel, with dis- 

 tinctly arcuate sides and rather rapidly rounded humeri; striae very 

 fine, not impressed, obsolete in apical two-fifths; punctures fine, 

 rather close-set, extending barely behind the middle; foveae very 

 small, near basal fourth and apical third. Length (9) 3.4 mm.; 

 width 1.2 mm. New Hampshire (summit of Mt. Washington). 

 [Ochthedromus axillaris \\ Lee. Lake Superior.], .mutatum G. & H. 



Body smaller, narrower, moderately convex, black, polished, the elytra 

 with the micro-reticulation faint, more evident behind, the post- 

 humeral pale spot large, extending inward to the middle; under 

 surface piceous, the legs flavate, infumate at the knees, the tarsi 

 fuscous; head but just visibly narrower than the prothorax, with 

 moderate though very prominent eyes; antennae rather thick, black, 

 rufous beneath basally, not quite as long as the elytra, the medial 

 joints slightly obconic, not quite twice as long as wide; prothorax 

 a fourth wider than long, the sides subevenly rounded anteriorly, 

 very oblique and less arcuate behind to the short sinus delimiting 

 the prominent and sharp basal angles; base one-half the maximum 

 width, the foveae small, deep, smooth as usual; elytra nearly three- 

 fifths longer than wide, about one-half wider than the prothorax, 

 just visibly inflated posteriorly and slightly wider behind the middle 

 than at base, the sides feebly arcuate; base oblique and arcuate 

 from the distinct humeri to the pedicel; striae fine, unimpressed, 

 obsolete in more than apical third, the punctures minute and rather 

 widely separated; foveae very small, at basal fourth and apical 

 third. Length (cf 9 ) 2.65-3.0 mm.; width 0.7-1.0 mm. Colorado 

 (Boulder Co.), Mrs. T. L. Casey vegetum n. sp. 



12 Entire elytra alutaceous, the micro-reticulation strong; striae very 

 fine but traceable almost to the apex. Body oblong, moderately 

 convex, deep black, the anterior parts polished and more blue-black; 

 under surface black, the legs wholly obscure rufous; head nearly 

 four-fifths as wide as the prothorax, with the usual moderately con- 

 verging sulci; eyes prominent; antennae thick, black, in part rufous 

 at base, as long as the elytra, the medial joints two-thirds longer 

 than wide, subcylindric; prothorax one-half wider than long, the 

 sides very evenly and strongly arcuate to the short posteriorly sub- 

 divergent basal part at the sharp, right and prominent angles; ante- 

 rior impression distinct at the middle only, the line before the basal 

 bead with a regular row of close punctures; base four-sevenths the 

 total width; elytra parallel, with slightly arcuate sides, barely one- 

 half longer than wide, only two-fifths wider than the prothorax; 

 strial punctures very fine, traceable almost to the declivity; foveae 

 small, near basal fourth and apical third, the anterior close to the 



