* SLIGHTLY BRONZED SPECIES with rows of golden or coppery spots. 



Thorax with broad ba3al impressions : elytral stri;e regular. . 18. calidlllll. 

 Thorax with small basal impressions : rougher, elytral striae frequently 



confused and golden spots faint 19. tepidum. 



* BRONZED SPECIES with three rows of chainlike elevations on the elytra, 



stria' confused. 

 Thorax less narrowed behind. 



Basal impressions broad, wings well developed : elytra oblong-oval, 



20. cancel latum. 

 Basal impressions shallow ; wings wanting; elytra oval, less deeply 



sculptured ... 21. subaeneum. 



Thorax more narrowed behind, basal impressions small, wings wanting, 



elytra oval 22. moniliut inn. 



* BLACK SPECIES with oval or rounded oval elytra, and without wings ; 



thorax emarginate behind with the angles produced. 

 Outer joints of antenna' pubescent as usual : 



Elytra broadly oval, with rows of close-set punctures and interme- 

 diate rows of more distant punctures 23. discors. 



Outer joints of antenna; pubescent only along the sides: 



Elytra longer oval, stria; confused, with three dorsal rows of larger 



punctures 24. Wilkesi. 



Elytra broadly oval, with distant rows of punctures: sculpture scaly, 

 sometimes nearly smooth : 



Hind angles of thorax not broadly rounded 25. Ilixalilin. 



Hind angles of thorax broadly rounded 26. latipciinc. 



1. externum. Say. Journ. Ac. Phil., Ill, I50.=longipenne, Dej. Length 30 mm. 



East., Middle, South, and Central States. 



2. macrum, Lee. Trans. Am. Phil., X, 400. Length 27 mm. Texas. 



3. protractmn, Lee. Proc. Ac. Nat. Sci., 1862, p. 52. Length 22-25 mm. Arizona. 



4. scrutator, Fab. Syst. Ent., I, 239. Length 30 mm. U. S. to Lower California. 



5. Witlcoxi, Lee. Ann. Lye, IV, 446 Length 18 mm. Atl. & Central States. 

 €. frigidum, Kirby. Fauna. Am. Bor., IV, 19. Length 20 mm. North. States. 



7. Sayi, Dej. Spec, II, 198. Length 25 mm. East and South States. 



8. angulation, Cherr. Col. Mex. Cent., I, No. 44. So. Cal. Length 27 mm. 



9. peregrinator, Guer. Revue Zool., 1844, p. 2bb.=prominens, Lee, Trans. Am. 



Phil., X, 4:00.=angulatum, \\ Lee , Ann. Lye, V, 199. Length 30 mm. Arizona. 



10. lugubre, Lee. Trans. Am. Phil., X, 400. Length 27 mm. Texas. 



11. carbonatum, Lee. Proc. Ac. Nat. Sci., XIV, 53. Length 25 mm. New Mexico, 



Upper Texas, Arizona, Lower California. 



12. Palmeri, Horn. Trans. Am. Ent. Soe, V, 199. Length 19 mm. Guadelupe 



Island, Cal. 



13. triste, Lee. Proc. Bost. Soc, I, 201 ; Bost. Journ., V, t. 18, f. 9. Length 18 mm. 



Central States. 



14. obsoletum, Say. Journ, Ac, III, l±9.=luxatum, Dej. Spec, II, 96. Length 20 



mm. Central States. 



15. semilaive, Lee. Ann. Lye, V, 199. Length 23 mm. Pacific States. 



16. simplex, Lee. Bulletin Brooklvn Ent. Soc, Nov. 1878, p. 61. Length 20.5 mm. 



Middle Cal. 

 17: Haydeni, Horn. Trans. Am.* Ent. Soc, III, 69. Length 22 mm. Col. 



18. calidum, Fab. Syst. Ent., p. 237 ; Say Tr. Am. Phil., II, 74. Length 22 mm. 



U. S. var. lepidum, Lee Proc Bost. Soc, I, 201 ; Bost. Journ., V, 208, t. 18, f. 8. 



19. k'pidum, Lee. Ann. Lye, V, 199. =irregulare, Walk. Nat. Vane, II, 342. Length 



18 mm. Pacific States. 



