222 REVISION OF THE BUPRESTIDA OF THE UNITED STATES. 
be found identical with Mexican species, but, if so, I can only plead the insufficiency of 
previous descriptions, or the inaccuracy of figures, as an excuse for any synonyms I may 
make. 
Our species may be conveniently arranged as follows. 
I. Abdomen segmento ventrali ultimo cristula transversa munito et sulco cirewmducto. 
A. Cuneiformes, thorace ante basin latiore, lateribus valde rotundatis, medio late excavato, ad latera oblique 
impresso, elytris striatis; corpus subtus parum pubescens - - : = - Sp. 1-6. 
B. Cuneiformis, elongata, thorace lateribus postice subrectis parallelis, elytris costatis; corpus subtus longe 
pilosum- - - - = 2 - - - - - Sp. 7. 
C. Fusiformis, thorace lateribus obliquis, subrectis, elytris striatis, humeris valde prolongatis, lateribus fortius 
sinuatis; corpus subtus longe pilosum - - = = u = Sp. 8. 
D. Vix cuneiformes, seepe cylindrici, thorace lateribus late rotundatis, angulis posticis subrectis, elytris striatis; 
corpus subtus parum pubescens. - - - - - - - - Sp. 9-13. 
Il. Abdomen segmento ventrali ultimo simplici. 
E. Subcylindrice, elytris striatis; corpus subtus parum pubescens. ah elves - Sp. 14-15. 
F. Cylindrica, elytris striatis; corpus subtus longe pilosum. - - - - Sp. 16. 
A. 
1. A. flavomarginata, cuneiformis, supra eeneo-nigra, pilis nigris erectis pilosa, fronte concava, thorace 
latitudine plus duplo breviore, lateribus valde rotundatis fortius marginatis ante basin latiore, fortiter punctato, 
medio triangulariter late et profunde excavato, utrinque oblique impresso, vitta marginali flava ornato; elytris 
punctis magnis seriatis fortiter impressis, interstitiis angustis uniseriatim punctulatis, a basi sensim angustatis, 
margine incrassato, dorso deplanatis, postice valde serratis singulatim rotundatis, vitta marginali postice abbreviata 
flava, fasciaque miniata antea picali, guttam communem suturalem alteramque lateralem nigras includente; subtus 
nigro-aenea, parce cinereo-pubescens. Long. -43. 
Gory in Griffth’s An. Kingdom, 1, 358, pl. 31, fig. 2; Chevr. Col. Mex. cent. lma. Lap. & Gory, Mon. Buprest. 
2 rtaby Whips: 
Eagle Pass, Rio Grande, Texas, Mr. A. Schott; abundant in Mexico. A very small 
yellow sutural spot near the apex of the elytra is visible in one specimen; in another, the 
lateral yellow stripe includes a marginal black dot near its termination. The red tint of 
the posterior band is sometimes wanting. ‘The striz at the sides and tip are very deep, 
so that the intervals become convex. The 3d and 5th intervals are slightly elevated at 
the base. The last ventral segment has a broad shallow marginal groove, with a faint 
transverse carina near the apex. 
2. A. opacula, cuneiformis, eneo-nigra, hirta, fronte vix impressa, thorace latitudine plus duplo breviore, 
lateribus obliquis rotundatis, fortiter marginatis, ante basin latiore, rude punctato, minus dense in medio, triangu- 
lariter late excayato, versus latera late foveato, lateribus flavis, margine summo nigro-geneo, elytris thorace angus- 
tioribus, a basi angustatis, postice magis attenuatis fortiter serratis singulatim subrotundatis, punctis quadratis 
seriatis, striis externis et ad apicem profundis, interstitiis angustis uniseriatim punctulatis, maculis pluribus satu- 
rate flavis, posticis rufo-tinctis; subtus parce pubescens. Long. -42. Tab. XII. fig. 5. 
