BEMBIDIIN^E 97 



colored and with vague maculation as in the preceding forms; striae 

 fine, scarcely at all impressed, the punctures very fine and rather 

 widely separated; foveae near basal fourth and apical third. Length 

 (9) 5-5 mm.; width 2.2 mm. California (St. Helena, Xapa Co. 



San Diego and San Francisco LeConte) approximatum Lee. 



Body smaller and narrower 16 



1 6 Bod}- narrower, more elongate and more convex, the elytral markings 



frequently rather poorly defined 17 



Body slightly less narrow, or more abbreviated, and less convex, the ely- 

 tral markings usually more sharply defined; species of the varium 



and patruele type 27 



17 Prothorax but slightly transverse and with feebly rounded sides; 

 elytra more or less alutaceous, the anterior parts strongly so. Nar- 

 row, black, with greenish or subaeneous lustre; elytra as in all the 

 preceding of this section, piceous, with very nubilous markings; legs 

 dark rufous; head four-fifths as wide as the prothorax and as wide 

 as an elytron, the sulci broad and shallow; antennae fuscous, less so 

 at base, the medial joints scarcely more than twice as long as wide; 

 prothorax less than two-fifths wider than long, the sides basally but 

 feebly converging and broadly, just visibly sinuate, the angles more 

 than right but sharp; margins very moderately reflexed; base feebly 

 depressed and slightly punctulate; impressions feeble, the stria fine; 

 foveae short but deep, the carina rather long and distinct; elytra 

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

 parallel, with the sides broadly arcuate, gradually rounding to the 

 humeri; striae entire, fine, not noticeably impressed, the punctures 

 fine, gradually obsolete posteriorly, not very close-set; foveae before 

 basal and behind apical third as a rule. Length (cf 9 ) 4.0-4.2 mm.; 

 width 1.3 mm. California (Alameda). Three specimens. 



devinctum n. sp. 



Prothorax more transverse and well rounded at the sides 18 



1 8 Prothorax distinctly narrower at base than at apex, although the 

 species evidently belong to the present, rather than to the cordatum 



section of the subgenus 19 



Prothorax as wide at base as at apex to somewhat wider 20 



19 Form moderately narrow, convex, feebly viridi-aeneous and notably 

 dull anteriorly, the elytra aeneo-piceous, paler toward the sides in 

 more than basal half, extending inward at base and near basal third, 

 and with a basal line and subbasal dot on the third interval, also 

 with the apex and a narrow irregular biarcuate fascia near apical 

 third pale; under surface piceous, the epipleura, hypomera and legs 

 pale piceous-brown; head three-fourths as wide as the prothorax, the 

 sulci very shallow, the eyes moderately prominent; antennae moder- 

 ate, piceous, the bases of the joints paler, the first three testaceous, 

 blackish above; medial joints slightly more than twice as long as 

 wide; prothorax two-fifths wider than long, the sides strongly rounded 

 and only finely reflexed, oblique and evidently sinuaite behind, the 

 angles more than right, sharp; impressions very feeble, the stria fine; 

 foveae small, deep, linear, the carina distinct, one-fourth the total 

 T. L. Casey, Mem. Col. VIII, Oct. 1918. 



