BEMBIDIIN^: 145 



Form slightly more ventricose, shorter, black, highly polished, not met- 

 allic; under surface black, the epipleura rufo-piceous, the legs dark 

 rufous, the femora blackish; head more than three-fourths as wide 

 as the prothorax, with prominent eyes and narrow, moderately con- 

 verging sulci, with an elongate anterior fovea external to the sulcus 

 as in Lopha; antennae fuscous, the first three to four joints testa- 

 ceous, shorter than in occiiltum, the medial joints not quite twice as 

 long as wide; prothorax as in the preceding but smaller and less 

 transverse, two-'thirds wider than long, the parallel arcuate sides 

 well reflexed; surface throughout similar, except that both the trans- 

 verse impressions are evident medially, though feeble; elytra much 

 shorter, parallel, one-half longer than wide, two-fifths wider than the 

 prothorax, the humeri very rapidly rounded; apex gradually para- 

 bolic; striae feebly and broadly impressed, obsolete in apical third, 

 the seventh wanting, the sutural as usual; punctures rather small 

 and widely spaced but distinct; foveae as in occiiltum. Length (d 71 ) 

 3.3 mm. ; width 1.23 mm. Mexico (Cuernavaca) . . *aztecanum n. sp. 



3 Body rather strongly convex, polished, black, with scarcely metallic 

 lustre, the under surface and legs rufous; head fully three-fourths as 

 wide as the prothorax, with large and prominent eyes and slender, 

 slightly oblique sulci; antennae but little shorter than the elytra, 

 testaceous, fuscous and somewhat incrassate distally, the medial 

 joints between two and three times as long as wide; prothorax two- 

 thirds wider than long, widest near apical third, the sides strongly 

 rounded, becoming gradually less rounded and strongly converging 

 behind about the middle, the posterior seta marking the position 

 of the extremely obtuse and obliterated hind angle; base one-half 

 the maximum width; impressions subobsolete; foveae as in occiiltum 

 but rather more linear; sides well reflexed, the basal bead strong; 

 elytra one-half longer than wide or less, a fourth or fifth wider than 

 the prothorax, oval, the humeri gradually and broadly rounded; 

 striae moderate, obliterated in apical two-fifths or half laterally 

 the seventh represented by a few subbasal punctures and barely 

 impressed; punctures not very fine, well separated and distinct; 

 foveae before basal and at apical third, the anterior near the third 

 stria as usual. Length (c? 9 ) 3-2 mm.; width 1.2 mm. Mexico 

 (Colonia Garcia, Sierra Madre Mts., Chihuahua), Townsend. 



*furtivum n. sp. 



Body similarly convex but more ventricose, piceous-black and shining; 

 under surface piceous, the legs pale flavo-rufous; head not quite so 

 large, though three-fourths as wide as the prothorax, the eyes and 

 sulci nearly similar, the anterior fovea outside the sulci short and 

 inconspicuous; antennae rather short, blackish, gradually rufous 

 basally, the medial joints barely twice as long as wide; prothorax 

 less transverse and smaller than in furtivum, barely one-half wider 

 than long, widest slightly before the middle, the sides more evenly 

 and rather strongly rounded, gradually converging behind; base 

 somewhat more than one-half the maximum width; impressions 

 similarly very feeble, the basal bead strong and conspicuous; foveae 

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



