REVISION OF THE BUPRESTID® OF THE UNITED STATES. 219 
B. Unguiculi appendiculati. 
Parapleuree obtectee (scutellum distinctum.)  - - - - - Ptosima. 
Parapleuree detectee (scutellum nullum.) - - - - - Acmeodera. 
TurincopyGE Lee. 
Antenne distantes, in foveis minutis insert, articulo Imo longiore sed haud crassiore, 2—4 obconicis, 5—6 
triangularibus, 7—11 subtrapezoideis: fossulis poriferis infernis, inconspicuis. Labrum transversum; epistoma 
late emarginatum. Mandibule truncatze, valde obtusee. Palpi breves filiformes. Mentum breve, corneum, trape- 
zoideum. Scutellum parvum triangulare. Prosternum latum lateribus haud angulatis, apice valde obtusum;_ 
mesosternum emarginatum, haud divisum, metasterno arcte conuatum, sutura tamen distincta. Pedes breves, tarsi 
valde dilatati subtus lobati, articulo ultimo plano, unguiculis distantibus integris, 1mo posticorum paulo longiore. 
Abdomen sexus utriusque articulo 5to postice sulco profunde cireumducto. 
A curious genus containing New Mexican species. The body is flat above, narrow and 
subparallel, the thorax narrower at the base, rounded on the sides, base bisinuate and 
margined. Elytra with acute humeral angles, parallel on the sides, then narrowed to the 
apex which is truncate and finely serrate. Anal plate in male formed of two segments, 
the last slightly emarginate; in the female flat and broadly rounded. 
1. T. alacris, late viridi vel cyaneo-eenea, nitida, capite grosse thorace parcius punctato, lateribus flavo mar- 
ginatis, elytris punctato-striatis, interstitiis parce punctulatis, maculis utrinque tribus plus minusve deficientibus, 
apice truncato subtiliter serrato. Long. -65—8. Tab. XIL., fig. 2. 
Lec. Journ. Acad. Nat. Sc. 2nd ser. 4, 17. 
Arizona and New Mexico. Varies in the size of the spots of the elytra, which become 
smaller, interrupted, and finally disappear entirely. The lateral yellow margin of the 
thorax also disappears, leaving only a spot behind the middle. In one specimen the an- 
terior margin is also yellow and interrupted into spots. A yellow spot on the posterior 
coxe is usually seen, but fails in many specimens; so, too, with a yellow dot at the ante- 
rior extremities of the anal sulcus. 
2. T. ambiens, viridi-anea, capite dense punctato, fronte rugosa, thorace punctato, margine laterali flavo, 
elytris striatis, striis punctatis, interstitiis uniseriatim punctatis, margine laterali flayo, pone humeros et ad medium 
paulo latiore. Long. -68. 
Buprestis ambiens Lee. Proc. Acad. 7, 83. 
One specimen, Frontera, Rio Grande, Mr. Clarke. Of a brighter green than the pre- 
ceding, though much less shining. 
CHRYSOPHANA Lec. 
Antenne distantes, in foveis parvis insertze, tenues, articulo 1mo obconico, et 2ndo paulo crassioribus, hoe duplo 
breviore, 3i0 angusto Imo zquali, 4—10 triangularibus, parce pilosis, sensim vix brevioribus, ultimo ovali, (fos- 
sulis poriferis haud obviis.) Labrum integrum, epistoma late emarginatum. Mandibule subacute; palpi fili- 
VOL. XI.—29 
