98 NEGLECT OF COMPANIONS IF IN TROUBLE. 
Again, some specimens of Cremastogaster scutellaris 
were feeding quietly (May 22) on some honey spread on 
a slip of glass, and one of them had got thoroughly 
mixed in it. I took her out and put her on the glass 
close by. She could not disentangle herself ; not one of 
her friends took the least notice of her, and eventually - 
she died. I then chloroformed one, and put her on the 
board among her friends. Several touched her, but 
from 12 to 2.30 P.M. none took any particular notice 
of her. 
On the other hand, I have only on one occasion seen 
a living ant expelled from her nest. This happened ina 
community of F. fusca. I observed (April 23, 1880) 
an ant carrying another belonging to the same commu- 
nity away from the nest. The condemned ant made a 
very feeble resistance. The first ant carried her burthen 
hither and thither for some time, evidently trying to 
get away from the nest, which was enclosed in the usual 
manner by a fur barrier. After watching for some time 
I provided the ant with a paper bridge, up which she 
immediately went, dropped her victim on the far side, 
and returned home. Could this have been a case in 
which an aged or invalid ant was being expelled from 
the nest ? 
I have often had ants in my nests to which mites 
had attached themselves. 
Thus, on October 14, 1876, I observed that one 
of my ants (Formica fusca) had a mite attached 
to the underside of her head, which it almost equalled 
