THE GROUND BEETLES. 101 



146 (Gil). EVAUTIIKIS SKJILIATUS Say. Trans. Amer. Phil. Sue.. II. ixi>:{. 



42; ibid. II, 4GS. 



Very close to xr.r/////>rrx.s-//x. Thorax with more narrow margin which 

 is not indexed or widened near base, the basal impressions more shallow. 

 Female dull black; male often more shining. Length 15-17 mm. 



Southern half of State ; scarce. May 12-October 20. 



147 (612). EVARTHRUS AMERICANUS Dej.. Spec. III. 1S27, 392. 



Form proportionally broader than in the two preceding species. Thorax 

 with hind angles less obi use and elytra more linely punctured. Thorax 

 slightly narrowed in front, the margin tine, not retlexed. Elytra in both 

 sexes subopaque. Length 15-18 rum. 



Crawford. Knox and Perry counties; scarce. May 15-Septem- 

 ber 10. 



148 (613). EVARTHRUS ORBATUS Newm., Entoiii. Mag., V, 1838, 386. 



Thorax not broader than long, slightly narrowed be- 

 hind, the margin narrow and scarcely reflexed ; hind an- 

 gles less strongly carinate. Elytra! strire deeper than in 

 the preceding species, rather finely punctate ; intervals 

 more convex. Length 15-17 mm. (Fig. 62.) 



Marshall and Posey counties ; rare. April 10- 

 October 17. 



E. colossus Lee.. 16-22 mm. in length, has l)een 

 taken in Kentucky and Illinois, and doubtless oc- 

 curs in southern Indiana. Fi g . 52 



149 (620). EVAHTHRI-S SOUAUS Lee.. Ann. Lye. Nat. Hist.. IV. 1X48, 34'.). 



Elongate-oblong. Dull black, the apical half of antennae and tarsi 

 reddish-brown. Thorax suborbieular. the sides strongly rounded to near 

 base, then suddenly sinuate, the base much narrower than apex. Elytra 

 finely alutaceous. rather deeply striate, the stride coarsely punctured; in- 

 tervals subconvex. Length 15-17 mm. 



Southern half of State, frequent; not yet taken in the northern 

 counties. April 3-September 16. 



150 (621). P]\ r ARTiiiifs i-TKTivrs Lee., Joiirn. Phil. Acad. Nat. Sei., 1S52. 



233. 



Differs from .sw///\ in having the thorax more broadly and obliquely 

 rounded on the sides, \vhieli are but slightly sinuate near the hind angles. 

 Length 15-16.5 mm. 



Throughout the State, frequent; less so northward. April 3- 

 September 27. 



