BEMBIDIIN/E 133 



the eyes moderate in size, rather prominent; converging sulci narrow, 

 deep and straight as in egens and the assimile group; antennae piceous, 

 rather long and heavy, the strongly obconic medial joints scarcely 

 one-half longer than wide; prothorax nearly as in egens; elytra nar- 

 rower, slightly more than one-half longer than wide, two-fifths wider 

 than the prothorax, obtusely parabolic at tip, the parallel sides more 

 arcuate than in the preceding and the humeri less strongly rounded; 

 striae nearly similar and with distinct and more close-set punctures, 

 but differing very much in becoming obsolete in apical fourth and 

 not evident to within a short distance of the apex as in egens and 

 the others preceding; foveae nearly as in egens. Length (9) 2.5 

 mm.; width 0.85 mm. Arizona (near Benson), Dunn. 



demissum n. sp. 



Form moderately narrow and convex, highly polished and deep black 

 throughout, the elytra without evident paler maculation, excepting 

 a small spot at the middle of the base of each; legs piceous; head 

 four-fifths as wide as the prothorax, the eyes moderate in size and 

 prominence; antennae rather long and heavy, piceous-black, the 

 medial joints slightly obconic and distinctly less than twice as long 

 as wide; prothorax much narrowed basally, fully two-fifths wider 

 than long, the sides very oblique in about basal half, sinuate only 

 at the angles, the parallel sides before which are extremely short; 

 base barely three-fifths the maximum width; foveae moderate, near 

 the carina, which is very fine, close to the margin and indistinct 

 under slight magnification; elytra three-fifths longer than wide, 

 about one-half wider than the prothorax, gradually strongly rounded 

 behind, the parallel sides arcuate; striae shallow, feebly impressed, 

 abbreviated at tip, the punctures relatively coarse, deep and rather 

 well separated basally, finer posteriorly; foveae before basal and near 

 apical third. Length (cf ) 2.6 mm.; width 0.9 mm. Mexico (Fed- 

 eral District *indigens n. sp. 



Form more parallel, convex, shining throughout, black, with feeble 

 greenish lustre, the elytra black, indefinitely rufous in more than 

 outer half to behind basal third, also with a more distinct testaceous 

 oblique fascia near apical third, extending inward to the third stria, 

 the apex also pale; legs blackish; head nearly as in the preceding, 

 the antennae similar in color, rather less thick, the medial joints 

 about twice as long as wide; prothorax one-half wider than long, 

 the sides less rounded and less oblique behind than in the preceding; 

 base nearly three-fourths the maximum width, the subparallel basal 

 part of the sides a seventh or eighth the total length; foveae rather 

 long, sublinear, the carina fine but evident; elytra one-half longer 

 than wide, gradually parabolic behind, barely two-fifths wider than 

 the prothorax, arcuate at the sides; striae moderate, only very feebly 

 and not at all sharply impressed, abbreviated well before the tip; 

 punctures rather small but deep and distinct, moderately separated; 

 foveae as in indigens. Length (cT) 2.6 mm.; width 0.85 mm. Mex- 

 ico (Amecameca) *pullulum n. sp. 



80 Antennae with the medial joints obviously less than twice as long 

 as wide. . . . 81 



