STUDIES IN THE AMERICAN BUPRESTID^ 75 



and more convex, black, shining above, the under surface bright cu- 

 preous; depressions of the upper surface cupreous; head cupreous, the 

 front feebly depressed medially, coarsely sculptured; antennae short, 

 obscure cupreous; prothorax convex, twice as wide as long, apparently 

 widest slightly behind the middle, the sides subangulate, converging 

 anteriorly, sinuate basally, the basal angles right; surface coarsely, 

 sparsely and irregularly punctate, the punctures more crowded laterally, 

 longitudinally and feebly impressed along the middle, with a narrow 

 smoother median line; elytra gradually narrowing to the apices, the 

 latter obliquely truncate, with the outer angle dentiform; serial punc- 

 tures becoming transversely confluent laterad, producing a rugose ap- 

 pearance, the intervals with a few punctures and some impressed punc- 

 tured bright cupreous spots; under surface coarsely and more or less 

 confluently punctate, the prostemum as usual; first ventral sulcata 

 medially, the sulcus abruptly defined; femora cupreous, the tibiae 

 black above with coarse greenish punctures, greenish-cupreous on the 

 sides, the tarsi obscurely cupreous. Length 16.5-22.0 mm. Texas 

 (Brownsville) . [ = Psiloptera cupreo punctata S.] . cupreopunctata Schaef . 



6 — Form stout, steel-blue, the head and pronotum variegated with viridi- 

 aeneous punctures, the pronotum unequally punctate, broadly impressed 

 "foveato" in the middle at base; prothorax almost twice as wide as long, 

 narrowed anteriorly, the sides at the middle obtusely angulate, thence 

 feebly subsinuate to the base, the basal angles right; elytra with punc- 

 tured striae, the intervals with quadrate impressed spaces, which are 

 granulate, pubescent and greenish-golden in color, very variable in 

 extent as in arizonica, obliquely feebly truncate at apex; under surface 

 densely and coarsely viridi-punctate, the prostemum bisulcate. Length 

 26.5-31.3 mm. Mexico (Ures, in the State of Sonora). [^Psiloptera 

 wehbi Lee] webbi Lee . 



Form short, stout and very convex, only moderately shining, blackish- 

 bronze above with metalUc green depressions; under surface dull 

 viridi-seneous laterally, deep and brilliant metallic roseate along the 

 middle, very bright on the pohshed sterna, dull on the abdomen; head 

 very coarsely, rugosely punctate, the antennal ridges unusually strong; 

 eyes prominent; antennae black, very feebly bronzed, with the lateral 

 sensory fossae small and rounded or oval, not linear as in the preceding 

 species; prothorax glabrous, about twice as wide as long, the sides 

 rapidly converging from base to apex, feebly angulate behind basal 

 third, thence straight to the apex, shghtly sinuate in less than basal third, 

 the angles slightly less than right; surface coarsely, sparsely but irreg- 

 ularly aeneo-punctate, more densely laterally, where there are some 

 elevated smooth areas, very feebly and indefinitely impressed toward 

 the middle of the base, the two punctures very evident; elytra but little 

 wider than the prothorax, the sides parallel and straight for nearly 

 three-fifths, thence gradually obUque, becoming very feebly sinuate 

 near the apices, which are rather broadly and obliquely truncate, with 

 the outer spine rather strong; surface with suturally feebly, laterally 

 strongly, impressed series of coarse punctures, becoming contiguous 



