BEMBIDIIN/E 117 



but with a general habitus allying the species with constrictum, 



rather than patniele -53 



Prothorax always very much narrower at base than at apex. ... .54 



53 Body moderately stout, rather convex, shining, the head very feebly 

 alutaceous; color black, sometimes with feeble aeneous lustre, the 

 elytra piceous, broadly, nubilously rufescent basally, except a dark 

 spot around the anterior fovea, also with a broad and feeble, ex- 

 tremely nubilous fascia near apical third, the apex pallescent; under 

 surface black, the epipleura partially pale, the legs bright rufous; 

 head well developed, fully three-fourths as wide as the prothorax, 

 with large prominent eyes, the sulci long, broad and rather deep; 

 antennae long, slender, fuscous, pallescent basally, the medial joints 

 between three and four times as long as wide; prothorax two-fifths 

 wider than long, widest slightly before the middle, the sides strongly 

 rounded, straighter apically, strongly oblique posteriorly, becoming 

 deeply sinuate before the angles, being parallel in about basal sev- 

 enth or eighth, the margins widely and peculiarly strongly, con- 

 spicuously reflexed; base equal to the apex, both almost truncate; 

 impressions shallow and very feeble; foveae long, deep and linear, 

 the carina long and strong; elytra one-half longer than wide, two- 

 fifths wider than the prothorax, parallel, the striae entire, scarcely 

 impressed, rather coarse, fine apically, the punctures strong, dis- 

 appearing at about apical third; seventh series distinct; foveae near 

 basal fourth and apical third. Length (cf 9 ) 4.8-5.0 mm.; width 

 1.8 mm. Massachusetts (Framingham Frost) and Michigan. 



[Bemb. dentellum Hayw. nee Thun.] arcuatum Lee. 



A Similar to the preceding but evidently narrower, the prothorax 

 less transverse, the base only apparently narrower than the apex 

 but actually equal, the elytra similar in every way, excepting that 

 they are more elongate, three-fifths longer than wide, two-fifths 

 wider than the prothorax. Length (cf) 4-5 mm.; width 1.6 mm. 

 Maine (Wales Frost). A single specimen sent to me as identi- 

 fied by Mr. Hayward under the name graciliformc. 



graciliforme Hayw. 



Body more oblong, moderately convex, black, the anterior parts strongly, 

 the elytra feebly, alutaceous, the elytra each with a large basal pale 

 spot, two fine and feeble on the third interval before and behind the 

 anterior fovea and one on the fifth opposite the fovea, a longer dash 

 at the middle of the eighth interval, a posterior fascia from the margin 

 to the fifth interval and a large apical area, also pale, the pale spots 

 composed of separated lines as in patniele; legs rufous, the femora 

 partially piceous; head large, with very prominent eyes, four-fifths 

 as wide as the prothorax, the sulci broad and shallow; antennae fus- 

 cous, paler basally, except a dorsal black streak, the medial joints 

 between two and three times as long as wide; prothorax nearly 

 one-half wider than long, the base and apex equal; sides rather widely 

 and strongly reflexed, broadly rounded, becoming broadly and al- 

 most imperceptibly sinuate basally, the angles obtuse but not 

 rounded; anterior impression subobsolete, the posterior broad but 

 evident; stria not entire, very fine; foveae deep, elongate-oval, 



