REVISION OF THE BUPRESTIDA OF THE UNITED STATES. 249 
28. A. desertus, seneus, subnitidus, capite dense punctato, postice sulcato thorace latitudine breviore, 
postice canaliculato, ante basin paulo latiore, lateribus oblique late rotundatis oblique profunde impressis, angulis 
posticis carinatis, elytris sat fortiter dense granulatis, apice serratis roundatis. Long. -24. 
One specimen found at the Junction of the Colorado and Gila Rivers, California. Closely 
resembles the preceding, but the thorax is more deeply impressed on the sides; the elytra 
are more densely granulate, less prolonged and more obtusely rounded at the apex, and 
the occiput is more densely impressed. 
29. A. puncticeps, obscurus wnescens, elongatus, capite pubescente medio fortiter haud confluenter punc- 
tato, occipite paulo canaliculato, thorace latitudine haud breviore dorso biimpresso, lateribus subrectis fortiter im- 
pressis, basi bifoveato, angulis posticis longe carinatis, elytris sat fortiter dense granulatis, sub-unicostatis, apice 
subserratis rotundatis. Long. -20—-25. 
? Buprestis geminata Say, Journ. Acad. Nat. Se. 3, 163. 
? Agrilus geminatus Say, Trans. Am. Phil. Soc. 6, 162. 
2 Agrilus nigricans Gory, Mon. Bupr. 4, 257, tab. 43, f. 250. 
Middle and Southern States. In this and the species below described, the base of the 
thorax, inside of the carina, is deeply foveate, so as to make the basal carina very acute; 
the carina itself is about two-fifths the length of the thorax. The punctures of the mid- 
dle of the head are large and not close, the occiput is rugous. 
The descriptions of Mr. Gory do not apply with such precision that I am altogether 
free from hesitation in using his names for any of the smaller species known to me, and 
unfortunately his figures do not exhibit any distinguishing character. 
30. A. cephalicus, obscurus, wnescens, capite cupreo, haud pubescente fortiter haud confluenter punctato, 
sat profunde canaliculato, thorace latitudine haud breviore, dorso canaliculato et biimpresso, lateribus subrectis 
fortiter impressis, basi bifoveato, angulis posticis oblique carinatis, elytris sat fortiter dense granulatis, subunicos- 
tatis, apice subserratis rotundatis. Long. -18—-25. 
Middle States and Lake Superior. A species very similar to A. puncticeps, but 
differing by the head being deeply channeled, with the sides convex; the groove widens 
and becomes shallow on the front, so as to produce a triangular depressed space; the carine 
of the posterior angles of the thorax are more oblique, and shorter, but in this respect, as 
well as in the pubescence of the front there is not a precise accordance between the spe- 
cimens referred by me to A. puncticeps, and it is possible that with increased mate- 
rial there will be found in it representatives of two or more species. 
dl. A. egenus, obscurus, enescens, capite viridi, pubescente, granulato-punctato, occipite paulo canaliculato, 
thorace latitudine haud breviore, lateribus late rotundatis impressis, angulis posticis carinatis, basi bifoveato, elytris 
fortiter dense granulatis, subunicostatis, apice singulatim rotundatis serrulatis. Long. -17—-21. 
2 Agrilus egenus Gory, Mon. Bupr. 4, 258, tab. 43, f. 251. 
Middle States: a species also closely resembling the two preceding ones, but differing 
