'nil'. (iiioiM) i!i:i;rLKS. IM 



(lt>|ne.ssiuU8 nai'i'dw aiul ^iiuilldw. lOl.vLral sti-i;L' liue, uot puuclureil ; in 

 icrvals Hat. Lcuiith 7. ">-!>.") mm. (Fig. 78.) 



Tlironghout the ii(n-thern part <»f the State; frequent. Not 

 taken south of Vigo County. Hibernates. January 6-Novem- 

 her 24. 



219 (802). Platynus excavati s Dej., Si)ec. ill, 1827, 16!). 



Elonjjcale. rathtT slemler. IMeeous brouzeil, shining; base ui anU'nme 

 and legs dull reddisli-browu. 'I'liorax alxmt as long as wide, but slightly 

 narrowed behind, sides regul.-irly loundcd : basal impressions narrow, deep, 

 imnf'tnrrd: liiTid angles obtusely ruinidcd. Klytral stria' tine, not or in- 

 dislinriiy puu'-lurod: intervals Hat. Length 7 7.;") mm. 



Lake, Laporte. Marion. Putnam and Vigo counties; frequent. 

 April 4— October 17. Occurs on sand and gravel bars of lakes and 

 streams. The dorsal punctures are larger than in any of our spe- 

 cies except octopunctatus, the first near third stria, the other two 

 near second. 



•J20 (SO:;). Platynus ferrels llald., Proe. Phil. Acad. Nat. Sci., I. 299. 



Elongate, slender. Head and thorax greenish-black ; antenna- piceous. 

 Thorax oval, nearly as long as wide, sides rounded, hind angles obtuse. 

 Klytral strire deep and strongly punctured on basal halt; more faint and 

 less distinctly punctured towards the apex. Length 7-7.5 mm. 



Marion, Lawrence, Knox and Posey counties; one specimen 

 from each. March 21-August 28. Occurs near water. 



221 (S04). Platynus basalis Lee. Ann. Lye. IV. 1S48, 227. 



Elongate, slender. Head and thorax blackish-bnmzed ; elytra bronzed 

 green, shining; antennae piceons, the basal joints and legs reddish-yellow. 

 Thorax a little longer than wide, narrowed toward the base, hind angles 

 founded ; basal impressions small, deep, finely punctate. Elytral stria? 

 rather deep; intervals moderately convex. Length 7-7.5 mm. 



Vigo and Pasey counties ; scarce. Hibernates. May 24— Deceni- 

 hef 18. The dorsal punctures are small and the second and third 

 vary much in position, though LeConte says they are placed on tlic 

 sec(md stria. Resem])les ertensicoUis but the basal impressions of 

 thorax much sliorter. roiinderl instead of elongate, the margin not 

 wider at base. 



*222 (805). Platynus nutans Say. Trans. Amer. Phil. Soc, II. 1S2.S. .".2: 

 ibid. 11. 47(1. 



Elongate, slender. Head and thorax bronzed green ; elytra blackish- 

 green or cupreous. Thorax oval, a little longer than wide, margin nar- 

 rowly reflexed. more strongly toward the hind angles, which are rounded ; 



