‘Formation of Colonies by Lasius fuliginosus. 669 
assailant with her antennae, which method of conciliation 
waftigenerally successful. When attacked on the thorax 
or 45domen she endeavoured to push off the ant with her 
hind pair of legs. 
December 12th, at 9.40 am. she was held by an 
antenna and a leg, but seemed uninjured. Again at 
3.30 3.33, 4.40 and 11.46 p.m. she was attacked and held 
by ys and antennae, and once a 9 was seen to pull at 
the leg of another S who was attacking the 2. She was 
so severely attacked that it was considered advisable to 
remove her with four $9 to a small box for the night. At 
7.40 p.m. on December 13th, not having been attacked 
again, she was restored with the 39 to the nest, and found her 
way to the innermost chamber where there were most ants. 
She was observed to be held by 36 on three occasions 
during the evening. Next day she was observed to caress 
a winged wmbratus 2 with her antennae and tongue at 
12.15 pm. At 7.15 p.m. she was surrounded by 88, one 
of whom pulled at one of her legs, but another was licking 
her, and a third saluted her. She caressed the assailant 
with ber antennae and forelegs. Later in the evening 
other ants were seen to salute her. December 15th, she 
was attacked three times during the day, but there were 
generally several ants round her caressing her. 
On the 16th she was only attacked once, and the next 
day she was seen to be on the wall of one of the chambers 
with a circle of ants round her, behaving as they do to 
their own queen. There was no sign of any attacking 
at all. 
The whole of the next day, December 18th, she spent 
in this position, and seemed thoroughly at home. She 
remained in the same place on the side of the chamber 
for a whole week. It was curious to compare the calmness 
with which this 2 was received by the somewhat phleg- 
matic wmbratus, with the excitement with which a colony 
of Lasius niger receives an wmbratus queen. 
On March 22nd, 1911, the § din the colony of fuliginosus 
from which the above-mentioned queen had been taken, 
having nearly all died, a second fuliginosus queen was 
taken and put into the umbratus nest at 10.30 p-m. She 
found her way into one of the inner chambers, but drew 
back nervously from the first ants she met. They, how- 
ever, were so friendly that she lost her fear and went 
among them. Only one or two opened their mandibles 
