STUDIES IN THE AMERICAN BUPRESTID^ 65 



dian line broadly and irregularly convex and smooth, more or less evi- 

 dently bifurcating anteriorly; elytra but little wider than the prothorax, 

 the sides just visibly converging for three-fifths, then rounding and 

 arcuately converging to the tip, the striation evident suturally; under 

 surface finely, densely punctate except medially, the abdominal seg- 

 ments coarsely and sparsely so apically as usual. Length 16.0-23.0 

 mm.; width 5.5-8.5 mm. Western Texas (abundant near El Paso). 

 [ = Chalcophora ohliterata Lee] obiiteratus Lee. 



Elytra without trace of the principal costules of obiiteratus, evenly convex 

 and more broadly, subevenly striate, with coarsely broken interspaces 

 in inner half of each, the surface thence to near the sides concave and 

 closely punctate though much more coarsely and less densely than in 

 obiiteratus; size smaller, the form more slender, shining, brassy-green 

 to dark green in color; head generally with three lines of coarse polished 

 broken rugae, the remainder densely and finely punctate; antennae 

 moderate; prothorax nearly similar but shorter, the apical margin 

 generally more angulate at the middle, the basal angles acute and 

 slightly everted, the scutellar sinus broad and very feeble; elytra nearly 

 as in obiiteratus in general form, the under surface unequally punc- 

 tured as usual. Length 14. 7-1 7.0 mm.; width 5.0-6.1 mm. South- 

 eastern Arizona fldelis n. sp. 



II — Eyes with their inner margins strongly converging upward as usual; 



basal angles of the prothorax prominent and acutely everted 12 



Eyes with their inner margins but feebly converging upward, the basal 



thoracic angles not everted 17 



12 — Prothorax very evidently narrower at apex than at base 13 



Prothorax about as wide at apex as at base; body very small in size 16 



13 — Body fusoid, the head not or but little wider than the base of an elytron 

 in either sex 14 



Body subcylindric, the head notably wider than the base of an elytron 15 



14 — Form very stout, convex, rather shining, deep cupreous in color, the 

 ashy pubescence short but distinct, evidently vittate on the elytra; 

 head unevenly punctate, finely along the eyes, for the most part, how- 

 ever, coarsely and confusedly rugose; eyes large and slightly prominent; 

 antennae short ( 9 ) , with the third joint much longer than the fourth, 

 the remaining joints strongly serrate; prothorax two-thirds wider than 

 long, strongly narrowed anteriorly, rounded at the sides, the basal 

 angles only slightly everted; surface with strong and irregular eleva- 

 tions, with densely punctate interstices laterally, coarsely, rather 

 sparsely and unevenly punctate medially and basally, the scutellar 

 sinus very broad and feeble; elytra evidently less than twice as long as 

 wide, but little wider than the prothorax, of the usual subparallel form, 

 obliquely narrowed posteriorly, the surface throughout subequally 

 convex and rugose and unevenly, not densely punctate, with the 

 striation more or less evident though deeper suturally; fine punctures 

 of the under surface less dense than in the preceding section, the pu- 



