BEMBIDIIN^E 101 



longer, strong, about a fourth the total length; elytra one-half longer 

 than wide, parallel, with evidently arcuate sides, obtusely rounded 

 at apex, about a third wider than the prothorax; striae fine, unim- 

 pressed, distinctly and rather closely punctate basally, the punc- 

 tures gradually obsolete a little behind the middle; third interval 

 but slightly broadened; foveae rather strong, before basal and some- 

 what behind apical third. Length (cf 9 ) 3.6-3.8 mm.; width 1.33 

 -1.4 mm. California (Tehatchapi Pass), Wickham. 



expositum n. sp. 



Prothorax relatively almost as in expositum, fully three-fourths as wide 

 as the elytra. Body much more elongate, the coloration nearly 

 similar throughout; head longer and larger, the eyes very much less 

 prominent, the sulci similarly deep and parallel; antennae fuscous, 

 barely two-thirds as long as the elytra, even more slender basally 

 and incrassate distally than in expositum, the medial joints more 

 than twice as long as wide; prothorax nearly similar in form and 

 structure but relatively very much less wider than the head; elytra 

 almost three-fourths longer than wide, scarcely a third wider than 

 the prothorax, very gradually and more narrowly parabolic at apex, 

 parallel, with arcuate sides and with more basally exposed humeri; 

 striae and punctures almost similar; foveae much more widely sep- 

 arated, before basal and behind apical third, the third interval not 

 much broader than the others. Length 4.2 mm.; width 1.3 mm. 



California (San Diego) jacobianum n. sp. 



Prothorax never relatively so wide as in expositum 25 



25 Outline somewhat ventricose, the elytra relatively broader. Black, 

 viridi-aeneous and rather alutaceous anteriorly, the elytra piceous, 

 with nubilous paler marking at base, at the sides in basal third and 

 on the third interval near the base, also with a nubilous biarcuate 

 fascia near apical fourth; legs and epipleura pale rufous; head rather 

 well developed, the antennae moderate, fuscous, rufous beneath 

 basally, the medial joints between two and three times as long as 

 wide; prothorax very nearly one-half wider than long, equally wide 

 at base and apex, the sides evenly and moderately rounded, becoming 

 feebly sinuate at the right, prominent and sharp basal angles; mar- 

 gins finely reflexed; surface with some rugulosity at base, the impres- 

 sions almost obsolete, the stria very fine; foveae small, deep, about 

 half as long as the distinct carina, which is more than a fourth the 

 total length; elytra scarcely one-half longer than wide, oblong, two- 

 fifths wider than the prothorax, rather obtusely rounded behind, 

 the striae not very fine, more or less impressed, entire, the punctures 

 very distinct, especially toward base, and rather well separated; 

 third interval much wider than the others; foveae rather before basal 

 and behind apical third. Length (cT) 4.4 mm.; width 1.8 mm. 



California (San Francisco) formale n. sp. 



A Similar to formale but with relatively somewhat larger prothorax, 

 the body smaller; prothorax with the sides more strongly arcuate 

 and more distinctly reflexed, otherwise nearly similar, except that 

 the apex is rather more distinctly narrower than the base; elytra 

 similar in outline and maculation, but with the striae unimpressed 



