r 57 ] 
Var. A. Thorax with the dusky disk obsolete. 
Resembles the dichroa Grav. in having the indentatioii 
on the middle of the base, but it it diflers in many respects 
& obviously in colouring. 
6. A. 4-pu7idata^ Thorax rufous, with four punctures 
placed transversely, 
Inhab. Missouri & Indiana. 
Head piceous black, with one puncture on the inner or« 
bit, & three or four behind the eye ; mitenrm^ reddish brown, 
three basal joints honey yellow: palpi piceous: thorax 
honey yellow with four distant punctures before the mid- 
dle, placed in a transverse line, the lateral ones less distinct - 
elytra dull honey yellow, wdth minute punctures, having 
prostrate hairs ; ter gum piceous, paler towards the tip : be- 
neath dark piceous : fed yellowish. 
Length over one tenth of an inch. 
The four punctures of the thorax is an obvious cha- 
racter. 
7. A. propera^ Blackish ; thorax depressed on the poste- 
rior middle. 
Inhab. Indiana. 
Body with very numerous, small punctures, funiisiiiog 
pale yellowish hairs : antennce black fuscous, three or 
four basal joints piceous : mouth piceous : thorax black- 
piceous, conspicuously hairy ; on the middle of the base in- 
dented : elytra piceous-brown, obviously hairy, a little de- 
pressed on the basal margin & in the region of the scute! : 
tergmn black : feet pale piceous. 
Length over or about one tenth of an inch. 
The depression, almost aro quite amounting to an inden- 
tation at base of the thorax is sometimes geminate. 
8. A. semicarinata^ Blackish : thorax with a carma on 
the basal half. 
Inhab. Missouri. 
Body black with a piceous tinge : thorax ^ with an ele> 
vated line, or two parallel impressed striae, from the mia- 
die to the base : elytra with a slightly impressed sutiiral 
groove on the basal half : abdomen black pale pice- 
