16 J. L. LECONTE, M. D. 



10. — Lateral margin of thorax sharply defined in its entire length 11. 



Lateral margin of thorax very incomplete. 



Margin obtuse in the greater part of its length ; form robust, piceous, pu- 

 bescence dark brown nearly erect ; 8 mm. Cal 10. liispidus. 



Margin obsolete in front; abdomen sparsely punctate; 7.5-8 mm. Oregon, 



Washington Territory 11. opacnlns. 



11. — Antennse with joints 2-3 each shorter than the fourth. 



Third joint of antennse shorter than second; form slender, brown, hind 

 angles of thorax feebly carinate ; flanks of prothorax beneath not densely 

 punctate, shining ; 5.5-9.5 mm. Georgia to Canada and Illinois. 



12. oblongicollis. 

 Third joint of antennse distinctly loager than the second ; piceous, elytra 

 dull i-ed, hind angles of thorax strongly carinate; flanks of prothorax 

 beneath densely punctate and opaque; 8 mm. Western K'evada. 



13. nevadeiisis. 



Antennse with joints 2, 3 and 4 very nearly of equal length 12. 



12. — Abdomen finely, closely punctate 13. 



Abdomen coarsely, not closely punctate 15. 



13. — Prothorax above and its flanks beneath coarsely not densely punctate, rather 



shining 14_ 



Prothorax and flanks densely more finely punctate, sub-opaque ; piceous, 



elytra dull red, the apical third piceous; 7.5 mm. Cal 14. apicalis. 



14.— Punctuation of thoi»ax coarse and deep, the punctures more distant from each 

 other than their own diameter: color entirely piceous; 8 mm. Vermont. 



15. avnisus. 

 Punctuation of thorax very closely placed ; piceous, elytra with long humeral 



space dull red ; 8 mm. California Ifi. Theveiietii. 



15. — Antennse not extending beyond the hind angles of the thorax, the interme- 

 diate joints (4-8) not longer than wide; thorax dull red, head and elytra 



almost black ; 7 mm. Yosemite, California 17. torquatus. 



Antennse longer than the head and thorax, joints all longer than wide ; pi- 

 ceous, elytra dirty yellow ; 6-7.5 mm. Idaho and Wyoming. 



18. niontaitus.'- 



Notes and Decriptions. 



4. A, TncOi^iis Lee. — Very variable in color. As a general rule the specimens 

 with paler thorax are somewhat more coarsely punctured. In California an en- 

 tirely ferruginous form occurs. 



5. A. ferrugiiieipeniiis Lee. — This species is far less convex than fucosus, 

 and the punctuation of the thorax is less deep and more distinct, the punctures 

 standing well apart. 



6. A. iinperrectiis n. sp. — Form parallel, piceous, sparsely clothed with pale 

 brownish pubescence, elytra often ferruginous. Antennse as long as the head and 

 thorax, brownish, joints 2-3 sub-equal, each slightly shorter than the fourth, 4-10 

 equal serrate, 11 longer. Head very coarsely and closely punctate. Thorax 



* The following species are omitted from the table: A. inversus Cand. is Seri- 

 cosomus flavipennis Motsch. A. protractun Horn, cannot remain in Agriotes, but 

 will constitute a new genus of Athoites, and will be described by me in a future 

 paper (G. H. Horn). 



