1106 FAMILY LIII. — niimsoMELin.i:. 



fully so," ])ut the beginner will evidently class the tips as rounclecl, 

 and I have therefore placed it in the present group. 



D. pusiUa Say, greenisli or coppery-hronzed, second and third 

 antenna! joints e((ual, length 6-8 inin., ranges across the northern 

 United States, has been recorded from ^lichigan and perhaps ol-- 

 curs in northern Indiana. 



L'OoG (6541). DoNACiA emakginata Kirby. Faun. Bor. Aiuer., IV, 18:57. 224. 

 I<]longate. sleuder, convex. Dark metallic blue, rarely purple or bronzed ; 

 antenn;io black, tbe joints often reddish at base, second and third joints 

 nearly efiual. Thorax longer than wide, median line distinct, sides with a 

 rounded tubei'cle on apical half; surface miiuitely rugose, finely and densely 

 punctate. Elytr.-i with an impression in front of middle, rounded ;it tiii; 

 sutural m.argin strongly sinuate on apical fourth; intervals feebly convex, 

 transversely rugose. Last dorsal segment of male emarginate. Length G- 

 7 mm. 



Lake Comity; fre(iuent locally. ]\Iay lil-June 15. Taken l»y 

 bea.ting tall sedges along sloughs near Pine. 



20o7 (G545). DoNACiA metallica Ahrens, Neu. Schrift. (Jes. Ilnlle. 1, 

 1810, 33. 

 Elongate, rather slender, convex. Color variable, usually greenisli or 

 bronzed, soinetinies blackish, strongly shining. Second and third anteunal 

 joints subeciual. Thorax longer than wide, narrowed near base, tul)ercles 

 on sides evident but feeble, median line fine; disk minutely rugulose, finely 

 and rather densely punctate. Elytra convex, tii)s rounded, punctures ratluT 

 coar.se; intervals almost flat, nearly smooth. Length 5.5-7 nun. 



Lake County, scarce; j\[arion County, fre(iucnt at Crow's Xcst, 

 near Broad Ripple, on the l)ase of the leaves of skunk cabbage, 

 Symplocarptis fadidus Salisb., April 26-l\lay 15. 



203S (654G). Donacia flavipes Kirby. Faun. Bor. x\mer., lY, 1837, 223. 



Elongate, rather slender, convex. Bronzed coppery, rarely dark blue, 

 shining; antenna^ and legs reddish-yellow. Antennna rather robust, third 

 joint one-third longer than second. Thorax one-half longer than wide, me- 

 dian channel wide, rather deep; tubercles on sides large, rounded, some- 

 what prominent; surface finely transversely rugose, densely and minutely 

 punctate. Elytra usually with two shallow transverse imiiressious near 

 middle; i)unctures coarse, (piadrate: intervals strongly transversely rugose; 

 distinctly sinuate near the tiiis. which are rounded. Mesosternum nar- 

 rower than cox.n^; first ventral segment shorter than metasternuni. Length 

 7-8.5 mm. 



Northei-n lialf of State, c<)nnu()n; not taken south of Vigo and 

 Wayne counties. iNIay 5~June 15. (Occurs ou reeds, rushes and the 

 arrow-alum, PtJIavdra iiihluhifa Raf. ]Mating May 21. 



