126 BROOKLYN MUSEUM SCIENCE BULLETIN 3. 3. 
ventral segments smaller and denser; pubescence very short and in- 
conspicuous; posterior femora in both sexes short, robust, somewhat 
elliptical, armed below with a large, triangular tooth; second joint of 
hind tarsi short, distinctly wider at apex than long. Length: 6-8 mm. 
Male: First ventral segment more or less deeply impressed at mid- 
dle, last ventral segment rather feebly depressed at middle of apex; last 
dorsal truncate or arcuate-truncate at apex. 
Female: Last ventral and dorsal segments broadly rounded at 
apex. Upper vaginal plate similar in shape to an arrowhead. 
Quebec: Montreal Island (Knab coll.); Mt. St. Hilaire (Knab coll.). 
Ontario: Port Hope (Bethune in coll. Wickham) ; W. Ontario and 
Toronto (Entomol. Branch). 
Iowa: Iowa City (Wickham). 
Michigan: Washtenaw Co., May (Hatch, Hubbell); Detroit (Hubbard 
and Schwarz). • 
Indiana: "Throughout the State; rather scarce. April-October" 
(Blatchley). 
Wisconsin: Bayfield (Wickham). 
New Hampshire: Hampton (Shaw in coll. Wickham); Mason, May 
(Frost); Mt. Washington (Nicolay). 
Maine: Cumberland (Nicolay); Eastern Machias (Fenyes); Wales, 
June (Frost); Monmouth, June, October sifting (Frost). 
Massachusetts: Springfield and Chicopee, June (Knab); Watertown, 
June (Sperry, Biol. Surv.); Southboro, May (Frost); Hopkinton, 
June (Frost) ; Sherborn, Nov. (Frost, sifting) ; Framingham, May, 
June (Frost). 
Connecticut; Rainbow, May (Walden). 
New York: Catskill Mts. (Pearsall) ; Keene Valley. May, June and 
July (Notman) ; White Plains, June (Squire) ; Ramapo (Schaeffer) ; 
Ithaca, May (Dietrich) ; Freeville, June (Dietrich) ; Suffern, June 
(Schaeffer); Portage, May (Knight). 
New Jersey: Newfoundland, May (Davis); Ramsey, May (Davis). 
Pennsylvania: Watertank, May (Kirk); Cresco, June (Kirk); North 
East, October (Cushman). 
Delaware; Seaford, June (Davis). 
Ohio; Cincinnati (Dury). 
This species has been found on Caltha palustris and Ranunculus acris 
by Mr. Davis ; on Carex stricta and in coitu on flowers of Prunus by Mr. 
Frost; on marsh grass on a hillside by Dr. Hamilton and Prof. Blatchley 
reports its occurrence on leaves and about roots of skunk cabbage. 
