3. A-. e.densicol/is. Say v (i’V\i\>riia) Trims. Am. 
Philos. Soc-. , : is also ■'■i-eferred ,by- D.eje'aii to 'thiis 
genns. 
4. A, decorus^ Say, (FeiMDiiia) ITahs. Amer. 
Philos. Soc. is. also referred to this genus by De- 
jean. 
5. A. collar is, Black with a hardly obvious 
tinge of purple ; tibiee and tarsi piceous ; thorax 
subquadrate ; elytra with three punctures bh the 
third interstitial line. 
Inhabits Indiana. 
Body black, polished, glabrous, with a few, 
rather long, marginal hairs : head impunctured ; 
base of the lirst joint of the antennoe, of the man- 
dibles black-piceous ; antennse at tip brownish, 
third joint of the same length as the fourth ; im- 
pressions between the eyes rather deep ; thorax 
rather short, wider than long, subquadrate, iin- 
punctured ; lateral edge regularly curved ; mar- 
gin slightly elevated, narrow, broader towards 
the posterior angles ; dorsal and anterior lines 
distinct ; posterior lines dilated, suborbicular, 
slightly rugous ; posterior angles very obtuse ; 
anterior and posterior margins subcqually bread ^ 
elytra with acutely impressed striie, regularly 
punctured ; punctures small, obsolete towards 
the tip ; third interstitial line with three punc- 
tures, two at the third strise and the terminal one 
at the second striae ; interstitial lines much de- 
pressed : tibiee, tarsi^ knees and extreme base of 
The thighs piceous. 
Length seven-twentieths of an inch. 
This species is rather more robust in proper^ 
tion to its length than the other American spe- 
--cies. The thorax is much broader and shorter. 
The species is perhaps more like Say, 
Than any other ; that insect is remarkably -de'= 
pressed about the region of the scutel. 
AGONUM, Bonelli. 
, 1, A. suturale. Green, polished ; suture cu- 
preous. 
Inhab. Mexico. 
. Above metalic green, polished, impunctured : 
head with a slight coppery reflection ; labrurn^ 
antenncB and palpi blackish : thorax varied with 
cupreous, dorsal line and basal dots obviously in- 
dented ; elytra with very slender strise ; intersti- 
tial spaces wide and plain, first one cupreous, 
third with three punctures, equidistant, basal one 
on the third stria, middle one on the second stria : 
Ireneath piceous-black ; coirce piceous, 
Dength three-tenths of an inch. 
This is a brilliant species, equaling in thrs're- 
spect the Fabr., and errans^ iNob, 
and but little inferior to cupripennis, Nob., all 
of which, togothef with nutans^ Nob., belonging 
to this genus, although I referred them to the in- 
cluding genus Feronia, Latr. The cupripenne^ 
Nob., is equal in splendor, though not in magni- 
tude, to the 6-pnhetatum, Fabr. In comparison 
with the pdrum piinctdtum^ F., the forrh is more 
