146 CASEY 



tured striae visible to some extent throughout the width, the lateral 

 margins much more brilliantly metallic aeneous and green than the 

 remainder of the disk, the elevations moderate, the areolae not well 

 defined and not densely punctate, except those behind the middle; 

 under surface similarly rugose and sulcate,the prosternal sulcus broadly 

 concave but only moderately pubescent in the male. Length ( (^) 

 15.8 mm.; width 5.2 mm. Vermont (Bennington Co.) . . . aestiva n. sp. 

 15 — Elytral striae fine. Body rather narrow, convex and shining, obscure 

 aeneo-cupreous, the under surface brighter, cupreous; head densely 

 and confusedly compresso-rugose, with a broad entire median impressed 

 line, the eyes moderately prominent; prothorax fully four-fifths wider 

 than long, the sides rather prominently rounded at the middle, thence 

 converging and feebly arcuate to the apex and parallel and broadly 

 sinuate to the base; surface not impressed medially, except narrowly 

 and rather deeply anteriorly, the basal pit deep, only very widely and 

 diffusely subimpressed laterally behind the middle, coarsely, closely 

 punctate and confusedly rugose; elytra sHghtly more than twice as 

 long as wide, just visibly wider than the prothorax, the sides gradually 

 rounding and converging in posterior two-fifths, becoming but very 

 feebly and broadly sinuate, the prolongation rather short and broad 

 but altogether gradual in formation, obtusely truncate, not becoming 

 parallel at tip; surface coarsely and almost regularly punctured, coal- 

 escently so toward the sides, the callous spots moderately convex, few 

 in number and widely separated; areolae wanting; fifth ventral (9) 

 closely bicostate, the median apical tooth small but acute. Length (?) 

 15.5 mm.; width 5.1 mm. New Hampshire (Hampton) . . rustican. sp. 



Elytral striae coarse 16 



16 — Pronotum more or less evidently and generally deeply, obliquely 

 impressed sublaterally behind the middle 17 



Pronotum without oblique impressions behind the middle 18 



17 — Form subparallel, moderately broad and convex, rather shining, ob- 

 scure cupreous, darker beneath; head coarsely, confluently and very 

 densely but somewhat evenly punctato-rugose, feebly depressed along 

 the middle, the eyes only moderately prominent; prothorax nearly as in 

 the preceding but with the sides more deeply sinuate basally, the base 

 somewhat narrower than the middle; surface more or less impressed 

 and closely punctate throughout the length medially, rather deeply, 

 confusedly and coarsely punctato-rugose laterally; elytra slightly 

 wider than the prothorax and evidently more than twice as long as wide, 

 sometimes feebly inflated subposteriorly, the sides very gradually 

 rounding and obliquely converging in apical two-fifths, the prolongation 

 moderately wide, obtuse, gradually formed, the incisure distinct and 

 deej:) but narrow; surface coarsely sulcate except laterally, the sulci 

 coarsely punctate, the intervals convex, the sublateral interval posteriorly 

 more ])romincnt than usual, the sculpture densely confused laterally, 

 the callous spots moderate and rather few in number, the areoke not 

 well defined except suturally and posteriorly; under surface as usual, 

 the apical tooth ( 9 ) small but very aciculatc, sometimes wholly want- 



