STUDIES IN THE AMERICAN BUPRESTID^ I43 



long and becoming parallel apically, ol)tuse, each with a strong, an- 

 teriorly bifurcating carina; surface almost even, with but very few 

 scarcely elevated and almost evenly oblong smooth spots, strongly, 

 coalescently punctate laterally and with even, unimpressed series of 

 punctures, nine in number, only the extreme lateral series being indis- 

 tinct; under surface rugose as usual, deeply sulcate along the entire 

 axial line to the tip of the first ventral. Length (c?) 20.0 mm.; width 

 6.4 mm. Pennsylvania (Allegheny) subaequalis n. sp. 



Sides of the prothorax sometimes slightly prominent medially, but always 

 rounded from a dorsal viewpoint 10 



10 — Body above deep and uniform blue-black throughout, moderately slen- 

 der and convex, rather dull in lustre; head very densely, uniformly 

 punctato-rugulose, impressed along the median line throughout; eyes 

 prominent, moderate in size; antennas piceous-black basally, not metal- 

 lic; prothorax three-fourths wider than long, the sides angularly prom- 

 inent at the middle, parallel and feebly sinuate to the base, moderately 

 converging and barely arcuate to the apex; surface with a large oval 

 impressed and punctate area before the middle, flattened and less punc- 

 tate thence to the deep single basal pit, laterally coarsely and very 

 densely punctate, obliquely, deeply impressed behind the middle, 

 with a small prominent callus before the middle and another at base in 

 the same sublateral line, also a small submedian callus near the lateral 

 margin; elytra slightly wider than the prothorax, between two and three 

 times as long as wide, the sides gradually rounding and converging 

 in apical two-fifths, rather abruptly sinuate at the base of the prolonga- 

 tions, which are short, broad and parallel, separated by a large acute 

 notch ; surface almost even, coarsely punctured except near the suture, 

 very densely laterally, the striae very distinct and impressed to beyond 

 the median, line, the callous spots small and very few in number, feeble, 

 the areolae few in number, and, behind the middle, large, shallow, less 

 coarsely but not at all finely punctate and not metallic; under surface 

 very deeply sulcate along the axial line. Length (J*) 18.5 mm.; width 

 6.0 mm. New York (Adirondack Mts.), — J. F. Kemp. . nigra n. sp. 



Body above metallic aeneous, bright to obscure, sometimes moderately 

 cuprascent 11 



1 1 — Sides of the elytra more strongly rounding and converging behind, the 

 prolongations rather abruptly formed and short, parallel 12 



Sides of the elytra more gradually rounding and converging through a longer 

 distance posteriorly, the prolongations very gradually formed, longer 

 and more acuminate 15 



12 — Elytral striae strong and distinct, sometimes nearly to the sides but not 

 sulciform 13 



Elytral striae very fine, sometimes traceable only to the median line 14 



13 — Body rather stout, moderately convex, shining, aeneo-cupreous, the 

 under surface slightly more intense in color; head coarsely, very densely 

 punctato-rugose, with sparse callous spots, more or less impressed 

 along the median line; eyes only moderately prominent; antennae 



Proc. Wash. Acad. Sci., April, 1909. 



