( m ) 
liiie impressed ; anterior, transverse very obvious^ arqnated?; 
basal lines dilated, suborbicular ; basal margin with slight 
inequalities or punctures between the basal lines ; a slight- 
ly elevated line on the lateral margin, forming a groove with 
tile slightly elevated edge, more obvious near the angle and 
becoming obsolete before : elytra very dark honey yellow, 
or brownish, much paler at tip ; strisa somewhat dilated, 
and with dilated, quadrate, profound punctures : strise more 
slightly impressed towards the tip and the punctures obso^ 
lete; third interstitial space a little broader than the others. 
with a puncture before the middle and another equidistant 
behind the middle, both nearer the third strise : wings per- 
fect : beneath black : abdomen tinged with piceous : feet 
pale yellowish. 
Length one-fifth of an inch. 
Reseml)les tetracoliim Say, but the elytral strise are more 
dilated, the punctures of the third interstitial space are 
more anterior and the posterior pale spot of the elytra i» 
quite terminal. Belongs to the genus Pery pirns, Meg. 
9. E. nigrum, Say, Trans. Amer Philos. Soc. The 
strias are so much dilated that no punctures are visible on 
the third interstitial space. 
10. B. sigillare, Cupreous ; elytra with two, dilated, 
fsubquadrate, green spots on each; fourth stri^ rectilinear. 
Inhab. Missouri. 
^ody bronzed-cupreous, somewhat polished: /ica(?greeu- 
isli each side and before; an impressed line near the eye,, 
between which and the eye is a dilated puncture : antennm 
blackish-green, first joint beneath piceous: palpi black-pi- 
ceous, tinged with green: thorax rather broader behind 
than before ; posterior angles acute ; lateral edge excurved 
behind; dorsal line distinct, but not deeply impressed, not 
abbreviated; basal lines dilated: elytra with punctured 
striai, punctures almost obsolete towards the tip ; fourth 
stria not undulated ; third interstitial space as broad as the 
sevenlli and with two dilated impressed subqiiadrate spots, 
green and including each a puncture, and placed Hear the 
middle : beneath dark green : feet blackish-green ; tibm 
and base of the thighs piceous greenish. 
Length less than one-fourtli of an inch. 
I obtained this species during the journey of Major 
Long’s party to the Rocky Mountains. It is very distinct 
from the incequale, Say, which it somewhat resembles, by 
