APPENDIX. 299 



the line of the head, and by the large spot on the humeral 

 region. 



2. S. aenei/rons. Dull fulvous, varied with fuscous ; head 

 and two spots on the thorax brassy. 



Inhabits North-west Territory. 



Body oval, punctured ; head densely punctured, con- 

 vex, with two impressed nearly rectilinear lines from the 

 tip abbreviated at the vertex ; lateral edges convexly ar- 

 cuated, tip rounded, the space included between the im- 

 pressed lines very slightly projecting ; antennx fuscous, 

 basal joint whitish ; thorax dull fulvous, with obsolete lon- 

 gitudinal fuscous spaces, and a brassy triangular spot each 

 side before ; lateral edge nearly rectilinear to the posterior 

 angles, which are rounded entire ; scutel dull fulvous, va- 

 ried with fuscous ; hemelytra punctured, visible portion 

 triangular ; beneath pale, head brassy, a brassy spot on each 

 side of the pectus ; thighs with a few black points. 



Length about three-tenths of an inch. 



This species is subject to vary in being rather smallei', 

 and in the fuscous variegations being hardly discernible, 

 but the other characters remain unchanged. 



MEMBRACIS, Fabr. Latr. 



1. M. diceros. Thorax 2-horned ; varied with brown, 

 pale before ; wings and beneath blackish. 



Inhabits United States. 



Body above punctured, truncated and vertical before, 

 surmounted by two horizontal subconic horns extending: 

 laterally ; clypeus, vertical portion of the Mor«a7,and trian- 

 gular space included between the horns, whitish-green, va- 

 ried with fuscous ; horns fuscous behind and beneath ; back 

 acutely carinated, terminated in a very acute subulate de- 



