1102 



FA MTTjY LTIT. — CHRYSOMELIDZE. 



m. Coppery-bronzed; third joint of antennae longer than second; 

 head not torose. 2034. distincta. 



mm. Blackish-violet; second and third joints of antennae subequal ; 

 head torose, i. e., with knots or elevations. torosa. 



2024 (10,334). Donacia cincticornis Newm., Ent. Mag., V, 1838, 391. 

 Elongate, rather slender, subdepressed. Above brownish-yellow strongly 



shining, often with a greenish tinge; head and thorax darker; beneath 

 clothed with dense gray pubescence; antennae and legs reddish-brown to 

 piceous, the tips of joints of former often darker. Thorax wider than long, 

 slightly narrowed near base ; disk nearly smooth, median line distinct ; sides 

 finely and somewhat rugosely punctured, with an irregular depression in 

 front of middle. Disk of elytra with two feeble transverse impressions; 

 punctures large, subquadrate ; intervals flat, nearly smooth. Hind femora 

 swollen and armed with one to three teeth. Length 7-11 mm. 



Northern half of State; common. Not taken south of Vigo 

 County. May 17-August 22. Occurs on the yellow water-lily. 

 Nuphar advena Ait., and the leaves of Potamogeton. 



2025 (6534). Donacia proxima Kirby, Faun. Bor. Amer., IV, 1837, 225. 

 Elongate, robust, depressed. Blackish-violet, head bronzed; antenna? 



and legs black. Thorax quadrate ; disk with a median impressed line, punc- 

 tate at base and apex, nearly smooth at middle. Elytral intervals not ru- 

 gose. Hind femora less developed than in cincticomis. Length 8-11 mm. 



Wells County; rare. August 1. Ranges from New England 

 to Oregon and probably occurs only in the northern part of Indiana. 



D. magnified Lee, violaceous, margined with golden yellow, 

 length 8-9 mm., is known from Canada and Michigan. 



2026 (6526). Donacia palmata Oliv., Ent., IV, 1795, 75. 



Elongate, slender, subdepressed. Purplish-green to brownish-yellow 

 above, strongly shining ; densely whitish pubescent beneath ; joints of an- 

 tenna? and femora reddish-brown at base, blackish at apex. Thorax broader 

 than long, very finely punctulate, sides with a rounded tubercle in front of 

 middle. Elytra coarsely punctate; intervals subconvex, distinctly rugose. 

 Length 9-11 mm. 



Starke, Marshall, Kosciusko and Vigo counties; scarce. June 

 20- August 20. Occurs on both white and yellow pond-lilies. 



2027 (6527a). Donacia rufescens Lac, Mem. Soc. Liege, III, 1845, 112. 

 Elongate-oblong, subdepressed. Brownish-yellow, feebly shining. An- 

 tennae with third joint twice as long as second, the other joints scarcely 

 thickened at apex. Thorax quadrate, very finely wrinkled, not punctured, 

 scarcely tuberculate on the sides. Elytra depressed without transverse im- 

 pressions, punctures small, feebly impressed; intervals flat, not rugulose; 

 tips squarely truncate. Length 6-8 mm. 



Kosciusko and Starke counties; rare. August 20-August 26. 

 Listed as a variety of D. hypoleuca Lac. 



