70 BROOKLYN MUSEUM SCIENCE BULLETIN 3. 3. 
Prothorax generally not quite one half wider at apex than long; 
sides more or less converging towards base and scarcely sinuate ; anterior 
angles more or less distinct but not prominent; basal angles prominent; 
lateral tubercle generally distinct by a more or less evident internal 
impression; apical impressed transverse line generally distinct; median 
line fine, often feeble; surface distinctly, finely alutaceous, base rugose 
especially at middle and along median line, disk with a few fine punctures. 
Elytra nearly twice as long as wide at base ; apices truncate, exterior 
angles feebly rounded; surface not alutaceous and more or less shining; 
strial punctures moderate and scarcely smaller towards apex; intervals 
more or less finely punctate and generally not rugose. 
Body beneath with fine, very dense, silvery-white pubescence; 
prosternal side pieces near the coxae with a rather wide, pubescent space ; 
mesosternal intercoxal process wide; intermediate femora distinctly 
clavate; middle tibiae produced internally into a short, tooth-like 
process. Length: 7-9 mm. 
Male: Anterior tarsi dilated, first joint subcordate; last dorsal 
segment truncate or feebly rounded; mesosternal intercoxal process 
wide but not as wide as the coxal cavities; last ventral segment truncate 
at apex and slightly depressed at middle of apex; first ventral segment 
not excavate. Posterior femora reaching the apex of elytra and armed 
below with a broad posterior tooth and a much smaller one slightly in 
advance of the latter. 
Female: Differs as usually from the male by being a little more 
robust, antennal joints shorter, last dorsal segment more elongate and 
converging towards apex; last ventral subtriangular, converging to- 
wards apex into a more or less distinct subacute point (pi. V, fig. 9); 
intercoxal process of mesosternum nearly as in the male; anterior tarsi 
normal, posterior femora nearly reaching the elytral apices and armed 
below with a single tooth. 
Ontario: Ottawa (Simpson). 
Quebec: Mt. St. Hilaire, June (Knab coll.); Bondville, July (Winn ex 
Chagnon); Lake St. Joseph (Davis coll.). 
Michigan: Oakland Co., June, July (Frankenfield). 
New Hampshire: Claremont, July (Engelhardt). 
Massachusetts: Attleboro, July (Frost); Chicopee, July (Knab). 
Maine: Monmouth, June (Frost). 
Connecticut: Goshen, July (Chamberlain). 
New York: Rockland Lake, July (Schott) ; Athens, July (Schott); 
Horicon (Doll) ; Keene Valley, July (Notman) ; White Plains, 
