OF WASHINGTON. 55 
phis. Mr. Schwarz said that in this and other allied genera of 
Scarabasidaa the odor is emitted by the imago as well as by the 
pupa, whereas the larva is not, or at least much less, odoriferous. 
Mr. Lugger said that even in the phyllophagous Scarabaeidas, 
e. ^., the genus Lachnosterna, the imagos emitted a faint, though 
not unpleasant, odor. Mr. Smith added that also in the cop- 
rophagous genera, especially Canthon, the odor of the imago is 
quite strong and unpleasant. 
Mr. Schwarz exhibited the following species of insects which 
are new to the fauna of the District of Columbia: i. Merope 
tuber of the Neuropterous family Panorpidce. One specimen, 
a male, was found on August 22d under a stone in the woods on 
a dry hillside near Rock Creek. Upon being disturbed the speci- 
men ran off rapidly, its fore wings vibrating in the manner seen 
in many Noctuids, the hind wings, at the same time, covering the 
abdomen excepting the forceps. Mr. Schwarz reviewed the his- 
tory of this remarkable insect, of which only a few specimens are 
known to be in collections. Of its earlier stages nothing is known, 
and of its habits we have only a short note by Dr. Fitch in his 
Fourteenth Report, stating that the two specimens he captured 
were attracted by the light in his house. 2. Chcetoccelus setosus 
of the Coleopterous family Malackiidce, found on August 28th 
on dead oak twigs near Bladensburgh. The only other known 
locality for this species is Columbus, Tex., where it occurred on 
old grape vines in the darkest portions of the bottom woods. The 
male appears to be extremely rare ; the female is among our most 
larviform Coleoptera, and, for this reason, liable to be overlooked 
by collectors. 
Mr. Smith described a peculiar brush of hair at the base of the 
abdomen in Schinia marginata (family Noctuidcz). It is a 
pencil of fine twisted strands set into a cup-shaped membrane, 
and usually concealed in a groove between the dorsal and ventral 
parts of the basal two segments of the abdomen. When first re- 
moved from this groove, the same smell of laudanum, so notice- 
able in Leucarctia acrcea, is also observable here. Spread out, 
a considerable brush of hair is presented. The insect has the 
power of voluntarily spreading out this tuft, and probably, also, 
of again withdrawing and folding it into place. 
Mr. Schwarz exhibited samples of the bark of Red Oak, show- 
