schaeffer: donaciini of the new world. 67 
median line faint or absent; ante-basal impression shallow; surface 
dull, alutaceous with a few punctures of moderate or small size. 
Elytra rather elongate-oval; strial punctures coarse; intervals 
generally finely rugose or occasionally almost smooth except towards 
apex where they are more or less convex; apices truncate, outer apical 
angle usually broadly rounded. 
Body beneath very densely and finely punctate and very densely 
pubescent with rather short, white or yellow silken hairs; side pieces of 
prosternum with a large pubescent space near anterior coxae ; mesosternal 
process between the middle coxae wide but not as wide as the middle 
coxal cavities; intermediate femora rather robust, scarcely clavate and 
nearly elliptical; middle tibiae in both sexes produced internally at 
apex into a short tooth-like process, adjacent to the usual apical spur 
(pi. V, fig. i). Length: 6-9 mm. 
Male : First ventral segment more or less distinctly depressed along 
middle; last ventral segment truncate ^and deeply depressed at middle of 
apex; last dorsal segment truncate at apex; posterior femora extending 
to elytral apices, strongly incrassate in apical half, armed below with two 
teeth, the posterior one with a ridge behind, the anterior one small, 
tubercle-like, often very indistinct. 
Female: Stouter than the male and antennae slightly shorter; last 
ventral segment produced at middle of apex into a more or less distinct 
laminate process which is often truncate or slightly emarginate at apex 
(pi. V, fig. 10); last dorsal segment rather elongate, sides converging into 
an obtuse point; posterior femora extending to the apex of the third or 
fourth ventral segment less strongly incrassate than in the male, armed 
below with one tooth behind which is a more or less distinct ridge. 
British Columbia: "Brit. Col." (Ent. Branch). 
Ontario : Sudbury (Ent. Branch) ; Ottawa (Simpson) ; Lac des milles 
lacs, Thunder Bay (Mclnnes); Prince Edwards Co. (Evans). 
Quebec: Val Morin (Knab coll.); Oxford Lke., July (Winn ex Chagnon). 
Wyoming: "Wy." (Minn. Univ.). 
Minnesota: Fergus Falls, August (Biol. Surv.). 
Indiana: Kosciusko and Vigo Co's., June (Blatchley). 
Michigan: Berrien Co., June (Hatch) ; Oakland Co., June, July (Franken- 
field); Detroit and Marquette, July (Hubb. & Schwarz). 
Wisconsin: Elkhorn, July (Knab coll.). 
Massachusetts: Concord River, July (Blanchard); Monterey, July 
(Frost). 
Maine: Paris, July (Frost). 
