4; 



■">. — l'i-. ■Th.>ra\ Mil-- "i • i -T.'i-n. 18. simplex. 



Prothorax im»re or less yellow,elytra finely and sparsely punctulate. 



19. decorus. 

 *i. — Leg's black, hind angles of prothorax more distinctly defined. 



20. californicus. 

 Legs black,' hind angles of protliorax less distinct. 21. floridanus. 



Legs piceo-testaceous, knees and tarsi darker. 22. texanus. 



7. Sides of prothorax not sinuate towards the base. ' s. 



Sides of prothorax sinuate, color greenish and testaceous : elytra! punct- 

 ures strong. 23. bieolor. 

 Sides of prut Ik i rax subsinuate; elytra! punctures small; color piceous. 

 base .if antenna- and legs testaceous. 24. pieeolus, n. sp. 

 8. — Color greenish, base of antennae, sides of prothorax, elytra and legs tes- 

 taceous. 25. anchomenoides. 

 Color brown (closely related to 27.) 26. ferruginosus. 

 Color black, sides of prothorax less reflexed, not sinuate, elytra! stria- 

 very fine. 27. erasus, n. sp. 

 !i. — Tarsi without medial grooves : color brassy black. 10. 

 Tarsi with medial grooves. 11. 

 10. — Hind angles of prothorax rectangular, basal impressions rugose. 



28. seneolus. 

 Hind angles of prothorax obtuse, basal impressions not rugose. 



29. quadratus. 

 11, — Depressed, black, opake. 30. funebris. 



car. a. Shining, micctois, Menetries. 

 Convex, piceous. antenme and legs pale. 31. elemens. 



D. — Elytra with broadly rounded humeri : protliorax with hind 

 angles much rounded, rarely obtuse and somewhat defined : side 

 margin wider towards The base ami reflexed; tarsi with distinct 

 lateral, but no medial grooves. 



Prothorax transversely oval, or rounded, rarely subquadrate ; elytra no! 



deeply emarginate at base. 2. 



Prothorax transverse, narrower behind, hind angles very obtuse and 



rounded, side margin narrow, basal impressions broad and shallow; 



elytra deeply emarginate at base. 28. 



2. — Black, rarely metallic: dorsal punctures 3; hind angles of prothorax 



much rounded. A. 



Metallic, prothorax longer and more narrowly margined, base of antenna' 



and legs ferruginous or brown : 4th tarsal joint without grooves. 16. 



Dull black, 4 outer joints of antennae white. 20. 



Antennae and legs usually yellow : and prothorax and elytra more or less 



yellow ; side margin of prothorax narrow, dorsal punctures 5-7 ; tarsal 



grooves nearly obsolete. 21. 



