560 TRANSACTIONS OF THE 



This species was obtained in the same locality witti the pre- 

 ceding. It is closely allied to undiihfus Say, but is more serice- 

 ous, the elytral lines are not so dilated or confluent, &c. 



4. H. INTERRUPTUS. — Black ; feet, frontal line, three thoracic 

 spots, and many elytral abbreviated lines yellowish. 

 Inhabits Pennsylvania. 



Body blackish ; head with a slight piceous tinge ; an anterior 

 honey-yellow triangular spot, the superior angle near the vertex ; 

 antennae pale yellow, dusky at tip; thorax obsoletely tinged with 

 piceous ; a lateral irregular spot, and a dorsal, longitudinal, some- 

 what fusiform one, honey-yellow ; elytra with an oblique im- 

 pressed line at the inner angles, a slightly impressed subsutural 

 striae, and an obsolete one on each side of the middle ; lateral 

 margin with two slender oblique branches before [446] the 

 middle, slender subsutural vitta exterior to the stria, interrupted 

 line or two along the middle, a small spot behind near the middle 

 and about two transverse series or two or three short lines, dull 

 honey -yellow ; beneath black ; pectus, feet and epipleura yel- 

 lowish. 



Length over three-twentieths of an inch. 



[Ante, 99, 91G. Identical with 11. jparallelus and 77. cafasco- 

 jnum. — Lec] 



5. H. DiscicoLLis. — Reddish brown, somewhat sericeous, 

 minutely punctured, middle of the thorax without punctures. 

 Inhabits North-west Territory. 

 Body entirely dark reddish brown, with minute punctures; 



head ; thorax with the disk impunctured, polished and 



a little more convex ; elytra darker than the thorax, more obvi- 

 ously sericeous ; lateral margin a little paler ; spot at the tip dull 

 yellowish ; postpectus black piceous. 

 Length three-twentieths of an inch. 



I obtained an individual of this species during Long's Expedi- 

 tion to the source of St. Peter's river, and although it is now 

 mutilated, yet I have no hesitation in giving it as distinct from 

 any other I am acquainted with. 



[Dr. Harris regarded this as the species afterwards described 

 as 77. dichrous Mels.; the description seems to me too indefinite 

 for accurate determination. — Lec] 



[Vol. IV. 



