NORTH AMERICAN COLEOPTERA. 11 



17.^Antenn» ferruginous; legs piceous or brown, tarsi conspicuously paler; 7-12 



mm. California, Oregon, H. B. T 34. mcereiis. 



18. — Pubescence brown, surface less shining, legs piceous; thorax more sharply 

 and coarsely punctate; 8-13 mm. Northern, Anticosti to Lake Superior. 



:i5. luctuosus. 



Pubescence brown-yellow or fulvous, surface shining, legs ferruginous, thorax 



more sparsely, less deeply punctate ; 7-9 mm. Pennsylvania to Canada, 



Lake Superior and H. B. T 36. nigricans. 



19. — Protliorax at base and sides dull red; 7-9 mm. Va. to Can. .37. rubricns. 

 Prothorax red with broad median stripe black; prosternum black; 10 mm. 



Nevada 3S. lateralis. 



Prothorax entirely scarlet. 



Body above and beneath red, head and elytra above black ; 8 mm. Cain. 



39. atripeiinis. 



Body beneath black. 



Prosternum entirely black. 



Prothorax very sparsely equally punctured ; 7-8 mm. Middle and 



Southern States 40. collaris. 



Prothorax more coarsely punctured, more densely at the sides; 10 



mm. Nevada 41. turquatus. 



Prosternum black at tip only; prothorax very sparsely punctate; 7 



mm. Nevada 42. nevadensis. 



20. — Elytra entirely scarlet; thorax very sparsely punctate; 6-10 mm. Massa- 

 chusetts to Georgia and Illinois 43. saiigiiinipennis. 



Elytra black, humeral space red; 8-9 mm. Mid. States..44. xaiithonius. 



Elytra black at apical half, red at base; 9 mm. Oregon. .45. diinidiatlis. 



Elytra dull reddish yellow, with an apical piceous spot which attains neither 



suture apex nor margin, and is sometimer wanting; 8-12 mm. N. E. States 



westward to Cala., Wash. Terr., Col. and Vane 46. apicatus. 



Elytra dull reddish yellow, apical third black; 7-8 m!n. Washington Terri- 

 tory and California 47. affinis. 



21.— -Elytra dusky with the tip and an oblique spot dull yellow, thorax often yel- 

 low; 3. 5-4. .5 mm. Canada, Illinois, Georgia 48. obliqtius. 



Entirely browni^^h testaceous; 3 mm. Georgia to Illinois 49. pusio. 



Notes and Descriptions. 



2. E. iiLsiguis.— Elongate, piceous brown, deeply not very densely punctured. 

 Antenuffi and legs dull red; the former longer than prothorax, strongly serrate, 

 without erect hair; prothorax longer than wide, gradually narrowed from base to 

 front, sides very slightly rounded hind angles long acute, strongly bicarinate, 

 deeply channeled at base ; strise of elytra deep, strongly punctured, interspaces 

 rugosely punctured : pubescence gray, coarse; 14 mm. 



One male, Texas; Mr. Gr. Belfrage; resembles in form a Melanotm 

 cnrficiinis. 



4. E. tiistus. — Black, with brown pubescence. Head and prothorax (includ- 

 ing prosternumj red. deeply rather densely punctured, narrowed in front, moder- 

 ately rounded on the sides, not channeled, hind angles very distinctly bicarinate. 

 Antennae rather strongly serrate, 3d joint nearly as long as the 4th, more triangu- 

 lar in the male ; 6.5-8 mm. 



Southern California ; Morrison ; one pair. 



