BEMBIDIIN^E 205 



wanting; under surface black, the legs flav'ate; head micro-reticulate, 

 well developed, the eyes rather large and prominent, the sulci mod- 

 erate, parallel, widely separated; antennae piceous, paler at base, 

 nearly three-fourths as long as the elytra, the medial joints fully 

 twice as long as wide; prothorax not quite one-half wider than long, 

 nearly as wide at base as at apex, the sides evenly rounded, becom- 

 ing gradually less so and more oblique posteriorly, sinuate at base, 

 the angles right, sharp and feebly reflexed; anterior impression ob- 

 solete, the subbasal fine, sulciform, finely punctate and obtusely 

 angulate, the stria feeble; surface without distinct ground sculpture; 

 elytra elongate, fully three-fifths longer than wide, two-fifths wider 

 than the prothorax, rounded in rather less than apical third, the 

 sides parallel and nearly straight; humeri sharply rounded; base 

 truncate; first stria deep, the second less deep, the third very feeble; 

 anterior fovea at three-sevenths; ground sculpture of transverse 

 micro-reticulation not so fine or strigiliform as in Tachys proper, 

 the lustre therefore not sericeous. Length 2.25-2.65 mm.; width 

 0.68-0.8 mm. California (San Diego). Abundant. . . .vittiger Lee. 

 Body smaller, elongate, deep black and shining throughout; legs black, 

 the tibiae and tarsi piceous; ground sculpture as in vittiger, except 

 that the micro-reticulation of the pronotum is nearly as strong as 

 that of the head and that of the elytra even coarser than in vittiger; 

 head smaller, scarcely three-fourths as wide as the prothorax and 

 somewhat narrower than an elytron; sulci very broad, parallel, the 

 eyes smaller than in vittiger, similarly nude as usual; antennae black 

 throughout, much shorter than in the preceding, barely two-thirds 

 as long as the elytra, the medial joints barely one-half longer than 

 w r ide; prothorax one-half wider than long, even somewhat wider at 

 base than apex, widest even less anteriorly than in vittiger, the sides 

 more broadly, subevenly rounded, straight basally, the angles slightly 

 obtuse and minutely subprominent at tip; sides of the base trans- 

 verse and straight; subbasal groove fine, rugose, broadly subangu- 

 late; elytra but little over one-half longer than wide, barely a third 

 wider than the prothorax, the outline as in vittiger, except that the 

 parallel sides are slightly arcuate and the humeri somewhat less ab- 

 ruptly defined; first two striae rather deep, especially the first; be- 

 yond the second only occasional glimpses of fine striae are obtain- 

 able; anterior fovea at three-sevenths. Length 2.2-2.5 mm.; width 

 0.7-0.85 mm. Utah (Provo), Wickham. Four examples. 



funebris n. sp. 

 4 Reflexed elytral margin crenate or serrulate for a short distance behind 



the humeri; disk of the elytra not paler laterally 5 



Reflexed margin smooth, without trace of post-humeral serrulation; disk 

 of the elytra with paler marking laterally, except apparently in 



occultator 8 



5 Tips of the elytra flavate 6 



Tips of the elytra concolorous, not at all flavate 7 



6 Form rather narrow, parallel, moderately convex and shining, the head 

 distinctly, the pronotum feebly, micro-reticulate, the elytra with 

 finer sculpture in transversely broken lines; color rufous, the elytra 



