.126 
Psyche 
[April 
builds its nests “under old stumps and in other situations similar 
to those in which the nests of B. fervidus are found.” 
I discovered two nests of this species on the surface of a 
grassy bank on Moss Hill, adjoining the Arnold Arboretum. 
One of these was found on July 26, 1923, after having been des- 
troyed, probably by a skunk. Among the scattered debris were 
found three living workers, and the dead bodies of the old 
queen, two young queens and a fourth worker. The marauder 
had also left behind over 90 empty cocoons, to which were at- 
tached two egg cells, containing 2 and 5 eggs respectively. 
The second nest was taken on June 23, 1924. It contained 
the queen, ten cocoons, a considerable number of larvae and 
eggs, and two honey-pots with a common wall (cf. fig. 1). Two 
Fig. 1. Double honey-pot of Bremus separatus Cresson. 
Fig. 2. Single honey-pot of Bremus impaiiens Cresson. 
other peculiarities of the double honey pot found in this nest 
were, (1) that its walls were about twice as thick as those of the 
single pot (cf. fig. 2) usually found in incipient nests of Bremus 
impatiens and Bremus vagans ; and (2) that it was completely 
closed at the time the nest was taken, whereas the other two 
species mentioned apparently never close their honey-pot. 2 The 
nest was transferred to one of the windows of the Bussey Dorm- 
itory, where other observations were made on this rare species 
during the remainder of the summer. 
Dr. Joseph Bequaert has been kind enough to furnish me 
with data concerning a nest of this species which he took on 
July 12, 1918, at Orient, Long Island. The nest was situated in 
2 Since writing the above, I have discovered the following note by the 
late F. W. L. Sladen (cf. Root, 1923, p. 172): "The queen's honey-pot in a 
nest of B. fervidus examined at Ottawa, Canada in 1915, was found to be 
completely closed, possibly a protection of nature, preventing ants, etc., 
from discovering the honey when the queen is absent from the nest.” 
