304 PROCEEDINGS OF THE ACADEMY OF 



Elj-tra piceons or Iwownish-black ; brunneics Dej. 12. castaneus De}. 

 ** Scutelkr stria long, color black. 13. scuiellaris n. sp. 



C. Hind tarsi slender ; prosternum margined at tip ; prothorax with 

 inner basal stria distinct, outer one wanting. 



a. Base of prothorax margined towards the sides ; humeral angles not 

 dentiform, elytra parallel, sides but little rounded near the base ; pos- 

 terior tarsi with obsolete groove on outer side : 



Elytral strife rather fine, interspaces flat, prothorax rather convex, slightly 

 wider than long, rounded on the sides, and not sinuate, base not 

 narrower than tip ; ampUcolUs Motsch, simplex Lee, muticus Lee. 



14. californicus Dej. 



b. Base of prothorax not at all margined : 



a Posterior tarsi not grooved on the outer side ; body less elongate : 

 Large, prothorax rather flat at base, and feebly narrowed behind, but 

 scarcely sinuate on the sides, elytra not wider than prothorax, 

 striae fine, interspaces flat, not shining. 



15. Menetriesii Motsch. 

 b First joint of posterior tarsi with two grooves and an interven- 

 ing ridge : body elongate, slender, the prothorax being nar- 

 rower than the elytra, and more narrowed behind : 

 * Scutellar stria long, {% with one, $ with two anal punctures each 

 side, as usual) : 

 Prothorax less narrowed behind, elytra more parallel ; contractus 



Lee. 16. castanipes Men. 



Prothorax more narrowed behind, elytra elongate oval : 

 Hiud angles rectangular : 

 Tarsal grooves extending on the second joint. 17. Spraguei n. ^^>. 



Tarsal grooves only on first joint ; longicollis\\ Motsch. 18. gracilior Itec. 

 Iliud angles obtuse rounded at tip. 19. Uornii n. sp. 



** Scutellar stria short, elytra elongate oval, deeply striate ; ( '^ 9 '"'i^ti 

 two anal punctures each side.) 

 Prothorax as wide as long, less narrowed behind, and sides less sinuate. 



20. Isabelhe Lee. 

 Prothorax longer than wide, more narrowed and sinuate behind ; ilhtstris 

 Lee. 21. congestus Men. 



D. Posterior tarsi slender, with the usual double groove and intervening 



ridge on the first joint, prosternum not margined at tip ; head of 

 usual size, prothorax narrowed behind, basal impressions linear, 

 single. 



a. Hind angles of prothorax rectangular ; base not margined ; 

 Tarsal grooves extending on the second joint, elytral stria^ deep, humeri 



dentiform ; tristis Dej., interfector Newm., sustentus Lee, subarcva- 

 tus Lee, rejectus Lee. 22. adorns Say. 



b. Hind angles of prothorax very small rectangular, base margined ; 

 oregonus || Chaud. 23. longicoUis Lee. 



c. Hind angles of prothorax obtuse rounded. 24. sphodrinus Lee. 



