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REVISION OF THE BUPRESTIDA OF THE UNITED STATES. 
1d 
16. A. guttifera, subcylindrica, xneo-nigra nitida, parce longe albo-pilosa, thorace latitudine duplo breviore, 
convexo, lateribus rotundatis, apice fortius transversim impresso, basi medio profunde late foveato, fortiter punc- 
tato, elytris cyanescentibus, basi thorace paulo latioribus, postice obtusius rotundatis serratis, striis fortiter punc- 
tatis, postice et extrorsum impressis, externis duabus antice confluentibus haud abbreviatis, interstitiis subtiliter 
uniseriatim punctulatis, guttis flavis ornatis, 3 discoidalibus, 5 submarginalibus; subtus nigro-zenea, longe pilosa, 
punctata, abdominis articulis 3 ultimis confertissime subtiliter punctulatis. Long. -28. 
Lec. Proce. 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 
antennze 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 1mo reliquis eequali Chrysobothris. 
Tarsi articulo 3io apice utrinque valde prolongato, postici articulo Imo 2ndo haud longiore Actenodes. 
CHRYSOBOTHRIS 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- 
bize 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 serrulato; (elytris costatis. ) 
a. Thorax equalis; elytra foveis discretis impressa - - - - - Sp. 1— 
b. Thorax inzequalis; elytra foveis confluentibus, vel vix discretis; 
«. Tibize anteriores % intus serratee, abdomen 9 apice truncatum, preecipue subtriden- 
tatum. - - - - - - - - - Sp. 8—8. 
B. Tibize anticee % apice dilatatae, vel versus apicem dente armatee; abdomen 9 apice 
subincisum - : - = = = - 2 Sp. 9—18. 
