OF PHILADELPHIA. 215 



mate, irregularly disposed, confluent, profound, dilated punctures : 

 eyes brown : antennae black, dark testaceous at 'base : labrum 

 piceous, impunctured : edge of tlie thorax and elytra more ex- 

 clusively bluish or violaceous ; punctures of the elytra larger 

 than the thoracic ones ; humeral prominence impunctured : pec- 

 tus with smaller punctures : postpectus with a few minute punc- 

 tures furnishing minute hairs, and with [448] the venter, which 

 is impunctured, bluish-violaceous : feet dark violaceous. 

 Length one-fourth of an inch. 



12. C. DENTicoLLis. — Lateral thoracic edge three-toothed ; 

 elytra serrate. 



Inhabits Missouri. 



Body black, slightly bronzed, covered with dense, robust, 

 cinereous hairs : antennae dull rufous at base : thorax with three 

 equal, equidistant teeth on the lateral edge : elytra, lateral edge 

 minutely dentated; tip simple: anterior tibia and posterior 

 thighs one-toothed. 



Length nearly one-fifth of an inch. 



[Belongs to Myoclirous Chevr., of which I have seen no descrip- 

 tion. — Leg.] 



13. C. INTERRUPTA. — Rufous ; thorax with two spots; elytra, 

 suture, exterior edge, and abbreviated vitta, black. 



Inhabits Arkansa. 



Body rufous, punctured : antennae black; five basal joints pale 

 rufous : thorax with a large black spot on each side : scutel pice- 

 ous : elytra rather paler, with regular punctured strife, which are 

 nearly obsolete at tip ; a black sulural line, exterior edge, and 

 oblique vitta, which originates upon the humerus, is interrupted 

 at the middle, and terminates before the tip : beneath blackish : 

 feet pale rufous. 



Length one-fourth of an inch. 



Found near the Rocky Mountains. 



[Belongs to 3Ietachroma. — Leg.] [449] 



EUMOLPUS Fabr. Latr. 



E. GRYPTIGUS. — Entirely covered with short, cincereous hair; 

 elytra very acute at tip. 



Inhabits Missouri. 

 1824.] 



