244 REVISION OF THE BUPRESTIDA OF THE UNITED STATES. 
is distinguished by the more convex and less densely punctured head, and the very pro- 
found oblique lateral impressions of the thorax. 
7. A. defectus, obscure-aneus, capite cuprascente, sat fortiter haud dense punctato, canaliculato, thorace 
latitudine haud breviore, vage impresso, lateribus subrotundatis impressis, angulis posticis brevissime fere obtuse 
carinatis, basi bifoveato, elytris fortiter dense granulatis, subunicostatis, apice singulatim rotundatis, servulatis. 
Long. -16—-19. 
Western States and Pennsylvania, Kansas. Differs from A. 2neus and other species 
of division B. by the much shorter and almost obsolete basal carine of the thorax, as well 
as by the form of the ungues. 
8. A. otiosus, valde elongatus, supra obscure viridis, capite subtilius granulato-punctato, postice vix im- 
presso, thorace latitudine haud breviore vage impresso, lateribus rectis, modice impressis, angulis posticis breviter, 
sxepe fere obsolete carinatis, basi bifoveato, elytris obscurioribus dense granulatis subunicostatis, apice rotundatis 
serrulatis. Long. -16—-21. 
Say, Trans. Am. Phil. Soc. 6, 163. 
2 Agrilus virens Gory, Mon. Bupr. 4, 259, tab. 48, f. 252. 
Middle and Western States, Kansas. Differs from A. egenus chiefly by the head 
being more finely punctured, and the thorax less strongly rugous, with the basal carine 
shorter sometimes almost obsolete, and by the form of the ungues. 
9. A. pusillus, obscure viridizeneus, capite convexiusculo modice punctato, subcanaliculato, thorace latitu- 
dine haud breviore, cyaneo yariegato, lateribus subrotundatis profunde impressis, angulis posticis carinatis, basi 
bifoveato, elytris fortiter granulatis, apice serrulatis rotundatis et subacuminatis. Long. -12. 
Say, Trans. Am. Phil. Soe. 6, 162. 
Buprestis pusilla Say, Am. Sye. Nat. Hist. New York, 1, 252. 
One specimen, Kansas. Smaller than any other species known to me. In addition to 
the above characters the punctures of the thorax are more distinct than usual, so that it 
appears rather reticulate than rugous. 
A—c. 
10. A. difficilis, elongatus, supra obscurus, eenco vel cupreo-tinctus, subnitidus, capite plano, luteo-pubes- 
cente, postice breviter sulcato, thorace rugoso, vage impresso, lateribus subrectis, postice subsinuatis anguste im- 
pressis, angulis posticis longe carinatis, elytris punctis fere subseriatis, postice confuse granulatis, apice serratis ro- 
tundatis; subtus cupreo-zeneus, abdomine utrinque maculis luteo-pubescentibus serie duplici ornatis. Long. 
*36—50. 
Gory, Mon. Bupr. 4, 224, tab. 37, f. 215. 
Agrilus occidentalis Uhler, Proc. Acad. Nat. Se. Phila., 7, 416. 
Western States, Dr. Harris and Mr. J. Ph. Wild. A very distinct species, but so in- 
definitely described by Mr. Gory, that were it not for his mentioning the hairy yellow 
spots of the abdomen, the determination would be doubtful, or indeed impracticable. One 
