I06 BROOKLYN MUSEUM SCIENCE) BULLETIN 3. 3. 
Alabama: Spring Hill, March (Loding). 
Ohio: Anglaisia Co., May (Dury). 
Kentucky: Clear Creek, July (Engelhardt). 
Illinois: Edgebrook, June (Liljeblad) ; West Pullman (Wolcott). 
Michigan: Livingston and Cheboygan Co., June and July (Hatch). 
Iowa: Iowa City, May (Wickham) ; Lake Okoboji, June (Buchanan). 
Colorado: Greeley (Wickham). 
The host plants of this species are apparently the burr reeds, 
Sparganium. It was collected on this plant by Messrs. Wenzel and 
Davis and the latter found them feeding on the flowers. Mr. Wenzel 
noticed dead specimens adhering to this plant in September. At Beaver- 
dam, Wisconsin, specimens w^ere collected in October by Mr. Snyder 
feeding on goldenrod blooms. 
The specimens which Kirby identified as aequalis are not distincta 
but suhtilis as Mr. Arrow informs me, who kindly examined the specimens 
in the Brit. Museum collection at my request. 
This common and well-known species varies a good deal in form, 
sculpture of prothorax and elytra and also coloration but is generally 
correctly identified in collections. The only species with which it could 
be confused is tuberculifrons but subtilis is a more elongate and more 
depressed insect with a different prothorax, generally more elongate 
antennal joints and usually finer elytral sculpture near apex. D. distincta 
is also similar to subtilis but the former is more robust with more equal 
and finer elytral sculpture, wider prothorax which has always a distinct 
median line, relatively smaller head which is more strongly narrowed 
behind the eyes, the latter smaller and more prominent and the apex of 
the last dorsal segment is emarginate in both sexes. 
var. FULGENS Lee. 
Similar in form and size to typical subtilis but generally less elongate ; 
prothorax, especially in the females, often wider and more even above; 
color metallic green, golden-green or bright cupreous; sculpture of 
prothorax and elytra denser and coarser and occasionally at about apical 
fourth wdth a more or less distinct tubercle-like elevation. 
Huds. Bay Terr.: "H. B. T." (Leconte coll.). 
Quebec: Montreal Island (Knab coll.). 
Minnesota: St. Anthony Park; Ely, September (Kubichek). 
Michigan: Cheboygan Co., July (Hatch). 
New York: Old Forge, June (N. Y. State Mus.) ; Saranac Lake (Shoe- 
maker) ; Cranberry Lake, June (Hatch) ; Oakfield, June (Notman) ; 
Black River, Lowville, June (Notman) ; Ithaca, June, July (Dietrich)- 
