MYRMECOPHILOUS NOTES FOR 1917. 93 
% 8,and the old queen is alive and well, but very few of the new 
deiilated 9 2 have survived. No eggs can be seen. 
CaMPONOTINE. 
Acanthomyops (Dendrolasius) fuliginosus Latr.—On August 17th I 
visited the birch tree, near Woking, where the battle took place 
between 4. (D.) fuliginosus and A, (Chthonolasius) umbratus, on Sep- 
tember 8rd, 1915 [Hnt. Rec., 28, 2 (1916)]. The victors are now 
thoroughly established in the tree, andin considerable strength. g ants 
were present and several mymecophiles occurred in and about the tree. 
Myrmedonia cognata Mirk., Amphotis marginata E'., Scatopse transver- 
salis var., in some numbers, and a few individuals of Blanjulus (pul- 
chellus ?). The last three had not been found with this colony before. 
As I witnessed the fuliginosus taking possession of the tree, it is of 
interest to keep a record of the different myrmecophiles which occur 
from year to year here. 
The virgin fuliginosus ? which was accepted by wmbratus § % in 
one of my observation nests [see Hnt. Rec., 28, 2-3 (1916) ; 29, 32 
(1917)] is still alive. I recorded that on January 28th, 1917, there 
were ten medium sized larvee, the brood of the ?, present in the nest. 
May ist, a small packet of eggs had been laid, andthe ? with her 
gaster considerably swollen was surrounded by a crowd of wmbratus 
8%. May 22nd, the nest being foul, the whole colony was trans- 
ferred to a clean, new nest. There were present 231 wmbratus 3 8, 
the fuliginosus @ , 9 larvee, 1 packet of eggs, and 2 Amphotis marginata 
(these two beetles have lived in captivity since May 7th, 1916). May 
24th, some ¥% 8 covering the larve with bits of plaster to help them 
to spin their cocoons. During my absence at West Worthing in June 
and July, this nest was allowed to get too dry, large numbers of the 
umbratus 8 8 died, and the eggs, larve, etc., disappeared ; the fuli- 
ginosus 2, a very few wmbratus 3 ¥ and the two Amphotis only 
surviving. August 18th, a number of A. (Donisthorpea) miger & 
cocoons from Woking were introduced into the nest, and collected by 
the umbratus 8 % ; also three wmbratus ¥ % (also from Woking), one 
of which had an Antennophorus uhlmanni on its chin. One of the 
strange % 8 attacked the ? slightly during the day; at night one of 
her legs had been pulled off and a dead ¥ lay near her. No more 
attacks were noticed. August 26th, the % ¥ from the niger cocoons 
began to appear (the Antennophorus had attached itself to one of the 
callow niger % 8), and by October 13th all had hatched and were sur- 
rounding the ?. October 16th, having taken a number of wmbratus 
% 8 at Weybridge, which had been established in a bowl with earth, 
I began to introduce a few at a time into the nest with the fuliginosus 
?, to strengthen the colony. At first the niger ¥ % killed them, and 
this went on until November, when a few were received. From then 
up to date, 4, 5, and 6 8 3 have been added every day, the myer % & 
no longer attack them, and they neither attack the niger ¥ 8 nor the 
fuliginosus ¢. November 20th, the fuliginosus @ began to swell with. 
eges again. December 31st, there are now present 60 niger 3 3, a 
large number of wmbratus ¥ %, the fuliginosus 2 surrounded by a 
court of umbratus, and the two Amphotis. 
Acanthomyops (Chthonolasius) umbratus Nyl.—On August 22nd a 
marriage flight of A. (C.) wmbratus took place at Putney (and also of A. 
