90 BROOKLYN MUSEUM SCIENCE BULLETIN 3. 3. 
Female: Last dorsal and ventral segments broadly rounded at apex. 
This species is taken on Potamogeton at Rigaud and Eustache in 
Quebec (Ouellet) and on Nuphar polycephalum at Cowichan Lake in 
Ontario (Ent. Branch) according to the labels on the specimens. 
Alaska: Cordova, August (Kusche in coll. Van Dyke and Nat. Mus.). 
British Columbia: Penticton, May (Wallis); Ouamichan Lake, Vane 
Island (Wickham). 
Washington: "Wash. Terr." (Morrison). 
California: Lake Tahoe (Mann). 
Alberta: Cooking Lake, July (Carr). 
Manitoba: Winnipeg and Piquitenay, July (Wallis); Aweme, July 
(Criddle). 
Iowa: Spirit Lake (Wickham). 
Wyoming: "Wy." (Minn. Univ.). 
Utah: Parowan Mts., July (Knaus). 
Michigan: Escanoba, July (Hubbard and Schwarz); Huron Mts., 
August (Hubbard and Schwarz) ; Detroit and White Fish Pond 
(Hubbard and Schwarz). 
Ontario: Cowichan Lake, September (Ent. Branch). 
Quebec: Rigaud, July and August (Ouellet) ; Boucherville, June (Ouellet) ; 
St. Johns Co., July (Chagnon) ; St. Denis (Knab coll.). 
Hudson Bay Terr.: "Huds. B. Terr." (Nat. Mus.). 
Maine: Cumberland Co., June (Nicolay); Monmouth, June (Frost). 
Massachusetts: Northborough, May (Frost, sifting). 
Connecticut: Hamden (Walden) ; Middlebury, May (Zappe). 
New York: Buffalo; Catskill; Rochester (Moore); Yaphank, Long 
Island, June (Engelhardt). 
New Jersey: Ramsay (Lutz) ; Lakehurst, July (Engelhardt). 
This species may be known by its densely, finely punctate, uneven 
and pubescent prothorax, unicolored metallic legs, relatively robust 
form and elytral apices squarely truncate or emarginate. 
The pubescence of the upper surface of prothorax is sparse and 
short and easily overlooked in some specimens; however, the pubescence 
covering also entirely the side pieces of the prosternum is always distinct 
and more evident. 
Specimens occur with typically colored ones which have the elytra 
flavous; in these the anterior angles, sometimes the basal margin more 
or less and partly the underside of prothorax are also flavous but the 
legs are apparently never bi-colored in these paler specimens. The 
