BEMBIDIIN/E 149 



twice as long as wide or somewhat less; prothorax nearly similar 

 in size, general form and structure; elytra shorter than in cnirale 

 and one-half longer than wide, almost similar in striation, two-fifths 

 to one-half wider than the prothorax. Length (c? 9 ) 2.7-3.2 mm.; 

 width 0.9-1.15 mm. California (coast regions from Sonoma to 

 Humboldt; San Francisco LeConte) dubitans Lee. 



Form, coloration and lustre nearly as in dubitans but narrower and much 

 smaller, the elytra with an extremely faint subbasal external pal- 

 lidity, but without trace of anything like a macula; head very mod- 

 erate, four-fifths as wide as the prothorax, the antennae as in dubitans 

 but still shorter, the medial joints less than twice as long as wide; 

 prothorax small, about a third wider than long, in form and struc- 

 ture nearly as in the two preceding, except that the sides in more 

 than basal half are less arcuate; elytra in form and striation nearly 

 as in dubitans but rather narrower, not quite one-half wider than 

 the prothorax, the foveae behind basal fourth and near apical third. 

 Length (d 71 ) 2.6 mm.; width 0.8 mm. California (Paraiso Hot 

 Springs, Monterey Co.) adductum n. sp. 



8 Body stout, suboblong, convex, polished, deep black, the elytra each 

 with a large pale spot behind the humerus, extending two-thirds to 

 the suture and not involving the lateral edge, which is black; legs 

 obscure rufous, the femora blackish; head as usual, three-fourths 

 as wide as the prothorax; antennae black, heavy, testaceous basally, 

 with the first three joints blackish above, as long as the elytra, the 

 medial joints obconic, very nearly twice as long as wide; prothorax 

 unusually large, one-half wider than long, widest at two-fifths from 

 apex, the sides evenly and strongly rounded to the very short deep 

 sinus delimiting the sharp and prominent angles; base three-fifths 

 the maximum width, the irregularly punctato-rugose channel along 

 the bead rather deep; foveae small but deep, at the angles as usual; 

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

 than the prothorax, the sides barely arcuate and the humeri rapidly 

 rounded; series of fine and widely spaced punctures not impressed, 

 obsolete in apical third. Length (cf ) 2.7-3.1 mm.; width 0.9-1.2 

 mm. Nevada (Reno). Four examples sapphicum n. sp. 



9 Form moderately stout and convex, polished throughout, piceous- 

 black, without marked metallic lustre; elytra each with a distinct 

 post-humeral pale spot and another smaller, subexternal and near 

 apical third, the latter sometimes wanting as in the original type; 

 legs flavate; head four-fifths as wide as the prothorax, the sulci but 

 just visibly convergent; antennae rather heavy, pale testaceous, in- 

 fuscate distally, the medial joints barely twice as long as wide; pro- 

 thorax two-fifths wider than long and widest at apical third; sides 

 strongly rounded anteriorly, very oblique and but just visibly arcu- 

 ate from before the middle to the minutely prominent basal angles; 

 base barely over half the maximum width; impressed line before 

 the basal bead almost imperceptibly punctate, the foveae small; 

 elytra one-half longer than wide, two-fifths wider than the prothorax, 

 oblong, parallel, with arcuate sides, the humeri broadly exposed to 

 the narrow basal pedicel; striae coarse, impressed, obsolete in about 



