REVISION OF THE BUPRESTIDvE OF THE UNITED STATES. 
229 
F. 
10. A. gu 11 i fer a, subcylindrica, a?neo-nigra nitida, parce longc albo pilosa, thorace latitudine duplo brcviore, 
couvcxo, lateribus rotundatis, apicc fortius transvcrsim impresso, basi medio profunde late foveato, fortiter punc- 
tato, clytiis cyancsccntibus, basi thorace paulo latioribus, postice obtusius rotundatis serratis, striis fortiter punc- 
tatis, postiee et extiorsum imprcssis, extcruis duabus auticc conllucutibus baud ubbreviatis, interstitiis subtiliter 
uniseriatim punctulatis, guttis flavis ornatis, 3 discoidalibus, 5 submarginalibusj subtus uigro-a?nca, longe pilosa, 
punctata, abdomiuis articulis 3 ultimis confertissime subtiliter punctulatis. Long. -28. 
Lee. Proc. Acad. Nat. Sc. Phila. 1859, 72. 
One specimen, Fort Tejon, California, Mr. Xantus. 
group v. 
A very distinct group, recurring to the normal series, and readily distinguished by the 
antenna? being situated in round cavities: the epistoma is frequently emarginate in front 
and strongly narrowed behind: the mentum is corneous at base, membranous at apex. The 
prosternum is broad, strongly acuminate at tip, and also on each side; the mesosternum 
is large, and completely divided. The scutellum is elongate and acuminate; each elytron 
is rounded or subangulated at base, entering the base of the thorax, which thus becomes 
lobed: the membranous lobes of the basal joints of the tarsi are obsolete. But two genera 
are found within our territory, which differ by very many characters detailed by Lacor- 
daire. The most obvious are, however, those derived from the tarsi. 
Tarsi articulo 3io apice truncato, postici articulo lmo reliquis a?quali Chrysobothris. 
Tarsi articulo 3io apice utrinque valdc prolongato, postici articulo lmo 2ndo baud longiore Actenodes. 
Chrysoboturis Esch. 
A numerous genus, containing species which sometimes resemble each other very closely, 
and which from neglect of certain characters of value derived from the abdomen and ti¬ 
bia? have been so described as to cause some confusion. 
For the most convenient separation of the species into smaller groups, the following 
table may be used. 
A. Abdomen segmento ventrali ultimo margine scrrulato; (elytris costatis ) 
a. Thorax aequalis; elytra foveis discretis impressa - gp q_ 2 . 
b. Thorax inmqualis; elytra foveis coufluentibus, vel vix discretis; 
«. Tibia? anteriores $ iutus serrata;, abdomen 9 apice truneatum, prmcipue subtriden- 
.Sp. 3—8. 
p. Tibiae autica? q, apice dilatata?, vel versus apiccin dente armata?; abdomen 9 apice 
subincisum -------- Sp. 9 _ 18. 
