244 ACADEMY OF NATURAL SCIENCES 



Somewhat similar to C. gahatusY2^ax., hui is considerably 

 larger, the head is unarmed, and in other respects sufficiently 

 distinct. It belongs to the genus Mktis of Leach. 



2. C ORDINATUS. — Ileadfulvous, with two black lines; thorax 

 with the lateral edges fulvous. 



Inhabits the United States. 



Head dull fulvous, with two broad, black, longitudinal lines : 

 antennae fuscous : thorax dull fulvous, with numerous, irregular- 

 ly disposed black punctures, lateral narrow margin fulvous, and 

 with an obsolete interrupted or abbreviated dull fulvous line in 

 the middle ; posterior angles rounded, not prominent ; posterior 

 mar^-in a little depressed : scutel colored and punctured like the 

 thorax : hemelytra also dull fulvous, with numerous black punc- 

 tures irregularly disposed ; membranaceous portion black : ter- 

 gum on the lateral margin black, the segments fulvous at base : 

 beneath pale fulvous, with a few black punctures : feet with nu- 

 merous black points. 



Length three-fifths of an inch. 



This is one of the most common of our species : when taken 

 it diffuses an odor which has been [319] compared to that of a 

 ripe pear. I have found it in Pennsylvania, Missouri, and 

 Florida. 



3. C. ARMIGERUS [armiger]. — Brown, feet white, spotted 

 with black : head spinous above the antennae ; margin of the 

 tergum black, with five white lineolar spots. 



Inhabits Missouri Territory. 



Body brown above, beneath pale : eyes prominent, rufous : 

 Btemmata sanguineous; above the origin of each antenna, an 

 elevated, prominent, acute spine, half as long as the basal joint 

 of the antenna : antennae, first joint white, spotted with black, 

 second and third black, white at base and tip, terminal joint 

 rufous : thorax punctured, elevated behind, descending almost 

 vertically and attenuating to the head ; anterior lateral edge 

 dentate, posterior angles dilated and terminated in an angle, 

 from whence the posterior margin descends sinuously and ob- 

 liquely, terminating in a short acute spine each side of the base : 

 base transversely rectilinear: scutel with three black spots at 

 base : hemelytra, a white oblirj[ue line in the middle on the mem- 



[Vol. IV. 



