I50 BROOKLYN MUSEUM SCIENCE BULLETIN 3. 3. 
a feeble, shallow ante-scutellar impression; surface densely and moder- 
ately finely punctate-rugose. 
Elytra shining with dorsal impressions distinct, the ante-median 
usually deeply impressed; serial punctures rather fine and slightly 
smaller towards apex, occasionally the punctures are moderately large; 
surface with more or less distinct, transverse, coarse rugae, intervals 
finely punctate but not densely, towards apex more rugose; lateral 
margin from a postero-lateral view usually evenly acute in almost its 
entire length. 
Body below more or less densely punctate and sparsely pubescent 
with white or cinereous, short hairs; side pieces of prosternum finely 
punctate-rugose anteriorly, posteriorly more or less distinctly strigate- 
rugose; posterior femora reaching to the apex of the third ventral 
segment, rather feebly clavate and at base scarcely narrower than at 
apex, below armed with a small tooth in both sexes. Length: 6-7 mm. 
Male: First ventral segment generally excavated along middle; 
last ventral segment depressed at middle of apex; last dorsal segment 
more or less distinctly emarginate at apex. 
Female: Last ventral and dorsal segment broadly arcuate at apex; 
lower vaginal plate similar to emarginata. 
This species is divisible into three forms: 
Typical eastern pusilla have the antennae usually stout especially 
the outer five, the second and third joints very small and equal, the 
fourth rarely as long as the first joint, the prothorax rather narrow and 
distinctly converging behind the lateral tubercles, the hind femora always 
bi-colored and the color of upper surface relatively very little variable, 
the majority of specimens being cupreous or bronze, a few have a faint 
bluish tint on disk of elytra but are very rarely entirely green. 
Pennsylvania: Starlight, June (Shoemaker). 
New York: Ithaca, May (Corn. Univ.), June (Dietrich); Pike, Elizabeth, 
June (N. Y. State coll.); Black River, Lewis Co., June (Notman). 
Massachusetts: Framingham, Wellesley, and Southboro, May (Frost); 
Brookline and Springfield, May (Knab) ; Cambridge (Knab coll.) ; 
Longmeadow, June (Dimmock, Biol. Surv.); Wilmington, June 
(Sperry, Biol. Surv.) ; Readville, September (Emmerton) ; HolHston, 
May (Emmerton); Sherborn, October (Frost, sifting). 
Maine: Wales, June (Frost); Paris, July (Frost); Tim Pond Plant, 
June (Frost). 
Newfoundland: Stephenville, July (Engelhardt). 
