176 J. L. LECONTE, M. D. 



% sixth ventral feeblj' emarginate, with a faint very narrow longitudinal 

 impression; black, antennae and legs blackish-piceous ; 6.6 — 7 mm; Lake 



Superior; Mass 16. simplex n. sp. 



'J, sixth ventral semieircularly emarginate, then semicireularly impressed, 

 broadly flattened at the middle; fifth with a longitudinal impression, 

 which is rounded in front, and extends from the hind margin for one- 

 half the length; black, antennae and legs brown, the former stout, with 



rounded joints; 4.6 mm.; N. Y. ; Can.; Mich.; Col 17. teniie. 



10. — Piceous, antennae slender, legs and hinder half of elytra ferruginous; the 

 last as strongly punctured as the prothorax; '^? 5.5 ram.; Vancouver, 



(one specimen) 18. divisilIU n. sp. 



Piceous, antennae brown, legs yellow, elytra more finely and sparsely 

 punctured; % fifth and sixth ventrals broadly emarginate, the former 



more feebly; 8 mm.; Louisiana, (one specimen) 19. pedale. 



Very small, testaceous yellow, elytra rather strongly punctured ; '^ with 

 ventrals 2 — 6 feebly channeled, sixth with two coarsely granulated black 

 spots'; hind tarsi but one-half as long as the tibiae, joints 1 — 4 equal; 



2.5 mm.; Detroit, Mich 20. debile n. sp. 



11. — Sides of head and prothorax very sparsely punctured 12. 



Sides of head and prothorax more densely punctured; elytra finely punc- 

 tured in rows; which are confused at the sides and tip; color uniform 

 chestnut brown; % sixth ventral acutely and deeply triangularly emar- 

 ginate; 6 mm.; Middle States 21. polituni. 



Head very sparsely, but sides of prothorax less sparsely punctured, elytia 

 strongly but not coarsely punctured, punctures confused, not placed in 

 rows; ventral segments uniformly finely and densely punctured ; color 

 dark brown, antennae and legs ferruginous; % sixth ventral with a 

 small triangular emargination, fifth obsoletely impressed longitudinally ; 



4.8 mm.; Mass 22. coiif nsuiu n. sp. 



12. Elytra with rows of coarse punctures slightly confused at sides and tip: 



form cylindrical convex IH. 



Elytra with rows of fine punctures, confused at sides and tip 14. 



Elytra with imperfect and distant rows of punctures; hind tarsi longer 



than usual, but little shorter than the tibiae 17. 



1,3.— Black, antennae and legs red-brown; % sixth ventral broadly emarginate: 

 fifth slightly impressed at tip; (fourth transversely impressed, perhaps 

 accidentally) ; black, antennae brown, legs dull yellow ; 5.8 mm. ; North 



Carolina, (one specimen) 23. seriatuni. 



Brown, antennse, legs and elytra paler; % sixth ventral triangularly im- 

 pressed behind, and less emarginate than in seriatum, ; 6 — 7 mm. : Mid- 

 dle and Western States 24. lougiu^iculuni. 



14. — Fifth and sixth ventrals less densely punctured 15. 



Fifth ventral finely and densely punctured like the fourth 1«. 



All the ventials sparsely punctured ; color black, antennae and legs red- 

 brown; 6 mm.; Florida, (one specimen) 25. parciiin n. s]>. 



15.— Black, rather finely punctured, antennaj and legs brown; % sixth ventral 

 slightly impressed longitudinally, deeply and narrowly emarginate 

 behind, end of c.iuargination rounded; 5.S mm.; San Jose, Cal. 



26. caliroriiic'iiiit. 



