219 
April, ’89.] history society of Wisconsin. 
Hack with red basal joints. The elytra are cream-colored, 
each with a median longitudinal black stripe, and on the 
edge of the suture, a black band, which, leaving its median 
course, passes obliquely outward over the anterior inner 
angle of each elytron. When the elytra are closed there are 
thus three longitudinal stripes, two lateral and onemedian 
which bifurcates anteriorly. A comparison of the rough 
descriptions of the two beetles shows the striking color 
resemblance. 
A few days later I again found these two species of Cole- 
optera together on willow bushes se\ era! miles from t e 
spot where I had first seen them. The females of Dison- 
ycha were gravid with eggs, which I found to be mature 
in the lower follicles of the ovaries, as the} droppe ** orr * 
the epithelial compartments with the slightest touc o 
the dissecting needles. Very probably many of the msec 
had begun to oviposit on the foliage. 
As Lebia grandis feeds on the eggs of the potato-beetle 
(Doryphora 10-lineata) , and the European Lebia c or 
cephala is known to frequent the foliage of certain spec 
of Hypericum for the purpose of feeding on the 
Chrysomela varians , I feel justified in conclu mg 
that Lebia furcata probably feeds on the eggs or you 
larvae of Disonvcha coroliniana. It true this wou exp 
why the Carabid should so closely" resemble in co onn^, 
Chrysomelid, the former being merely" a W °1 ia s ? 
clothing. The Disonycha evidently mistakes it 01 one 
its own species and oviposits on bushes wheie 1 ^ 
otherwise not, as it is capable of flyring and leaping c 
erable distances. 
The species of the genus Lebia are usually brigh i y 
elegantly colored, their hues and patterns not in re 
resembling those of various species of Chrysome 1 > 
so far as I know/no other cases of mimiciy la've 
been observed in the two groups. Lebia 
