June, 1918.] NiCOLAY & WeISS : BUPRESTIS IN NORTH AMERICA. 81 



Key to the Species. 



I — Prosternum not or weakly and shortly sulcated, anterior tibite of male 



internally emarginate and armed with a reflexed tooth at apex 9 



Prosternum broadly sulcated, anterior tibiae of both sexes simple 2 



2 — Elytra punctate-striate (Subgenus Stereosa Casey) 7 



Four or more elytral costse, suture and margin elevated (Subgenus 



Cypriacis Casey) 3 



3 — Elytral costas flat, punctured 6 



Elytral costx convex, ihcir summits polished and not or \ery feebly 



punctate 4 



4 — Third of the true elytral costa: very short, costie feebly punctate. 



sulcicollis Lee. 



Third costa long, sutural costa at least inipunctate 5 



S — Elytra with four costx, tips of elytra not bidentate, head with median 



costa aurulenta Linn. 



Elytra with eight costa:, tips of elytra sub-bidentate, head with faint 



median sulcus adjecta Lee. 



6 — Above, dark, coppery brown striata Fab. 



Above with more or less green var. impedita Say 



7 — Bright green above 8 



Color uniform dull cupreous brown apricans Hbst. 



S — Tips of elytra bidentate, form narrow elongate decora Fab. 



Tips of elytra not bidentate, form short and stout. . . .salisburyensis Hbst. 



9 — First segment of abdomen not sulcated 19 



First segment of abdomen sulcated 10 



10 — Elytra with distinct spots or vittre 13 



Elytra immaculate 11 



II — Elytra strongly furrowed, often with a dull shine 12 



Elytra not strongly furrowed, polished brassy to greenish. 



maculativentris Say 



12 — Black, often with a dull shine var. rusticorum Kirby 



Elytra and pronotum uniform green to dull green. .. .var. subornata Lee. 



13 — Interstices of elytra alternately convex 16 



Interstices of elytra flat 14 



14 — Elytra each with two vittse more or less confluent and united 15 



Elytra with flavous spots or blotches maculipennis Gory 



15 — Vittas brick-red or fulvous, never or at most but slightly united. 



lineata Fab. 

 Vittas flavous, generally united except at humerus and apex. 



var. davisi n. var. 

 16 — Abdomen coarsely punctate, yellow markings of elytra interrupted by 



striae, interstices of elytra alternately strongly convex 17 



Abdomen feebly punctate, yellow markings of elytra usually not inter- 

 rupted by striae, surface smooth and polished, interstices of elytra 

 alternately feebly convex laeviventris Lee. 



