Labrum broadly and feebly trilobed ; elytra n« >t 

 sulcate, humeral carina moderate, hind tarsi 

 long and slender. 6. depressus. 



Labrum distinctly trilobed ; elytra sulcate towards 

 the sides, which are more narrowly margined. 

 Less slender, elytral rows of punctures double or 



obsolete. 7. duplicatus. 



More slender, elytral rows single. 8. obsoletus. 



Hind tibiae $ densely pubescent on the inner side 

 near the tip. 

 Elongate, humeral carina long. . 9. elongatus. 



Broader, humeral carina short. 

 Humeral carina moderate. 10. punctulatus. 



Humeral carina very short. 11. californicus. 



1. strenuus, Lee. Bull. Buff. Soc. N. H. 1874. p. 266. Length 35 mm. Fla. 



2. sublaevis, Bonelli. Obs. Ent. 1813, 2d. p. 46.-rugosus, assimilis and sub- 



striatus, Lee. (intermediate variations). Length 21-28 mm. N. Y. to 

 Fla. and Ills. 



3. marginatus, Bonelli. 1. c. p. 45. Length 32 mm. S. Ca., Tex., Fla., La. 



4. subsulcatus, Say. Trans. Am. Phil. Soc. II. 19. Length 20 mm. Ga. Fla. 



5. mexicanus, Gray. Griffiths, - An. Kingd. p. 274, pi. XII. f. I.-viridans, 



Lee. Proe. Ac. JS T at. Sc. 1S58. p. 61. Length 26 mm. Mex. Ariz. 



6. depressus, Bonelli. 1813. 1, c. p. 45. (Searites depressus, Fab. 1792. Ent. 



Syst. I. 94.) var. mono, Lee. Ann. Lye. IV. 145. pi. VII. f. 2. with- 

 out blue border; leevis, Lee. ibid. 146. Length 24-29 mm. N.Y.. 

 La.-IUs. 



7. duplicatus, Lee. Trans. Am. Phil. Soc. X. 395. var costifer, Lee. Proe. 



Ac. N. S, 1854. Length 25-29 mm. Tex. and Ind. Terr. 



8. obsoletus, Lee. Ann. Lye. 1848. IV. 148. Length 23 mm. Kans., Col. 



9. elongatus, Lee. Ann. Lye. " " 147. " 23-26 mm. Ills. Mo. Ks. 



Col.-depressus, Say. Trans. Am. Phil. Soc. II. 19 - 



10. punctulatus, Hold. Proe. Ac. N. Sc. 1843. I. 299. Length 29 mm. Ala. 



Tex. West. States, to Ills. 



11. californicus, CM. Bull. Mosc. 1850. II. 437.-punctulatus,| Lee. (nee. 



Hald) — validus, Lec.-corpulentus, Lee. Length 27-34 mm. Tex. to 

 Utah and Col.. 



SCABITES, Fab. 



Of the same form as the preceding genus, but narrower and the posterio 



angles of thorax wanting. Common under stones. 



1. subterraneus, Fab. Mant. I. 206 Say. Trans.Am. Phil. II. 18.(with 10 syno- 

 nyms). Length 15-20 mm. U. S. 



2: substriatus, Hald. Proe. Ac. Phil. II. 54.= quadriceps, Chaud. Length 

 25-30 mm. Western and Southern States. 



