670 Hy st Io Pe and W. C. Crawley on the 
on meeting her, and most saluted her at once. It was 
a complete and almost instantaneous acceptance. At 
10.40 p.m. a fuliginosus 8 was put into the nest. She 
remained absolutely quiet till 10.56, all the time sur- 
rounded by wnbratus 93. They then began to attack her, 
and she was removed at 11.10 p.m. A fertile wmbratus 2 
from a different colony, put in the nest at 10.45 p.m., was 
not attacked till 10.56, when she was seized by several 9%, 
and so was removed at 11.10 p.m. A niger 2 was intro- 
duced at 11.1 p.m., and was almost immediately attacked. 
At 11.40 p.m. the second /fuliginosus @ found her way to 
the innermost chamber, and began to caress the original 9, 
who was, of course, her sister, and they generally remained 
together afterwards. The colony now consisted of 157 
umbratus 99 and two fuliginosus 2 2. 
During April 1911, two more /fuliginosus queens were 
put into the nest, and were received just as readily as the 
second. They both belonged to the same colony that the 
first two had come from. On May 9th one of these two 
new 22 (which had been in a feeble condition from the 
first) died. On the 11th, at 8.45 p.m., several wmbratus 99 
from a colony at Wellington College were put into the 
nest, which, it will be remembered, consisted of ants from 
a colony at Weybridge. These $9 were received in a 
perfectly friendly way, so about fifty more were put in, and 
were also received. At 10.15 p.m. two of the new-comers 
were attacking one of the three /uliginosus 2 2, and again 
at 10.25 and 10.40 p.m. It was necessary to compel them 
to release the 2. No further attacks were seen that day 
or the next,so twenty more $9 were putin. One almost 
immediately began to attack a 2, and on two other occa- 
sions during the day the 2¢ were attacked. At 4.40 p.m. 
on May 12th, as the new-comers seemed to have become 
reconciled to the presence of the alien 29, the remainder 
of the wmbratus 99, about thirty in number, were intro- 
duced. At 5.6 one 2 was being pulled by a leg, and at 
5.40 another was held by an antenna, but no more attacks 
were made. Workers from a colony at Woking were also 
received amicably. On May 19th one of the 22 was 
removed and placed in the nest of a queenless colony of 
her own species, LZ. fuliginosus. She was attacked con- 
tinuously in a desultory fashion, but made no attempts to 
conciliate her assailants by caresses. Next day she was 
still being dragged about, so at 2.5 p.m. she was restored 
