232 REVISION OF THE BUPRESTID® OF THE UNITED STATES. 
this exhibits the phenomenon of subspecies or races, which, however, should not be dis- 
tinguished by different names, since frequent transitions may be found between them, and 
the characters which separate them are not similar to those which distinguish well de- 
fined species. 
The ventral segments in this species have smooth triangular lateral spots, and their 
angles project; on the last segment this spot is somewhat elevated behind, but not denti- 
form as in C. octocolaand basalis. 
5. C. soror, depressa, obscura, zenescens, punctata, thorace subineequali antice paulo latiore, vix obsolete ca- 
naliculato, punctis transversim confluentibus ruguloso, elytris costis solitis interruptis, impressione anteriore trans- 
versa quadrata, posteriore fasciformi sinuata, serratis, apice singulatim rotundatis; subtus cupreo-zenea, prosterno 
dense punctato. Long. -40—-45. 
Mas fronte viridi, corpore subtus viridi-tincto, pygidio haud carinato, abdominis segmento ventrali ultimo emar- 
ginato, tibiis anticis et intermediis curvatis, intus serrulatis. 
Femina pygidio carinato, abdominis segmento ventrali ultimo sinuatim truncato, medio prominulo, tibiis anticis 
et intermediis parum curvatis. 
Middle and Western States. So closely allied to C. femorata, that I separate it 
with some doubt; nevertheless, with several specimens before me, the anterior impression 
of the elytra seems to extend only as far as the subsutural costa, and there is no impressed 
spot anterior to it completing the fascia to the suture: the thorax is also only obsoletely 
or not at all channeled, and the punctures produce small transverse folds, not seen in C. 
femorata; otherwise there appears to be no special difference: the last ventral segment 
is, however, slightly less tumid anteriorly at the sides. 
6. C. Lesueuri, depressa, obscura, senescens, punctata, thorace subinzequali, canaliculato, antice paulo 
latiore, elytris costis solitis interruptis, fovea quadrata antica, alterisque duabus posticis fere confluentibus cupras- 
centibus, serratis, apice singulatim rotundatis; subtus cupreo-zenea, prosterno dense punctato, linea levi notato. 
Long. -40—-45. 
Sexus differentia sicut in priore. 
Laporte & Gory, Mon. Buprest. 2, 49, tab. 9, f. 66. 
Middle and Southern States. Also closely related to the two preceding, but the ante- 
rior impression is a square fovea, situated on the second costa not extending to the subsu- 
tural, and the posterior impression is divided into two by the second costa; these two are 
obliquely placed, and are not confluent, though they sometimes nearly touch. 
7. C. obscura, depressa, supra fere nigra, punctis enescentibus, thorace subineequali, canaliculato, elytris 
costis solitis, parce fortius punctatis, fovea quadrata antica, maculaque postica obliqua sinuata vage impressis, postice 
oblique angustatis serratis, apice singulatim breviter rotundatis; subtus cupreo-zenca, prosterno dense punctato. 
Long. ‘45. 
Mas capite viridi, segmento ventrali ultimo emarginato, tibiis anticis et intermediis curvatis, intus serrulatis. 
