I02 BROOKLYN MUSEUM SCIENCE BULLETIN 3. 3. 
Illinois: "111." (Univ. Minn.). 
Wisconsin: Cane Co., May (Marshall). 
Minnesota: St. Anthony Park (Univ. Minn.). 
Maine: Cumberland Co., May (Nicolay). 
Massachusetts: Tyngsboro (Blanchard). 
Specimens from Onah, Manitoba (Wallis), and also from Washington, 
D. C. (Schwarz, Beyer and Knab), are doubtfully placed here for the 
present. They are not typical. 
Egg, larva and cocoon on J uncus (H. S. Hubbard). Sweeping grass 
in marsh (M. H. Hatch). The Manitoba specimens referred doubtfully 
here were found feeding in the flowers of Caltha palustris by Mr. J. B. 
Wallis. 
The prothorax is very variable in form and sculpture in this species. 
Fully developed specimens have the anterior angles projecting laterally, 
in others in which also the prothorax is relatively narrower the anterior 
angles are not projecting. The punctures are moderately large and the 
intervals between these are often finely punctulate or rugulose. The 
elytra are in the majority of specimens rather more elongate and also 
generally more finely transversely rugose than in the other species, but 
this sculpture is variable and is nearly as fine also in some hiimpressa. 
The third antennal joint and the hind femora are in some specimens 
longer than in hiimpressa but in others are very much like those of 
hiimpressa. Lacordaire describes the coloration of the antennae as 
"rougeatre assez obscur, paraissant meme noiratres sous certain aspects." 
Seen from the sides or below they are reddish but above are more or 
less blackish in most of the specimens. The pubescence of the underside 
is dense and in fresh specimens almost obscuring the cupreous color, 
especially on the first ventral segment of the male, the hairs are a little 
coarser and slightly longer and the eyes are also slightly larger than 
in hiimpressa limonia. The very fine and very dense transverse strigosity 
of the intervals gives the elytra a dull appearance. 
The few Manitoba specimens seen are mostly more robust, the 
pubescence of the underside less dense and are more like hiimpressa 
limonia than porosicollis. The eyes are less prominent. However, 
one of the specimens, a female, is very nearly typical. Thje specimens 
from Washington, D. C, are nearer porosicollis than to hiimpressa 
limonia. They are possibly entitled to a varietal name but are placed 
at present doubtfully here till more material of both forms and of typical 
porosicollis is available. 
