98 TRANSACTIONS OF THE [FEB. 4, 
hol they would discharge the same milky juice, which may be 
seen adhering to the mandibles of some of the specimens. 
Species No. 4 I found on a post near our coal-bin, and J think 
they are the same as those sent with my first samples to you. 
They have the same appearance as No. 3 (Termes testaceus 
Linn.), but are much smaller, and without the milky secretion 
in the soldiers. 
I placed a number of Termes testaceus L. (No. 3) in a glass jar, 
—hboth soldiers and workers,—-adjusted my lens, and then drop- 
ped in several of No. 4, and watched their manceuvres for some 
time. They rushed to battle at once. No. 3 made use of both 
mandibles and milky secretions. A No. 4 worker caught hold of 
a No. 3 soldier by the abdomen and pierced it, and out burst quite 
a flow of milky fluid, apparently nearly suffocating the assail- 
ant; while No. 3, very much reduced in size by loss of its secre- 
tions, turned in a rage on No. 4 and nearly clipped it in twain. 
I punctured the abdomens of several soldiers of No. 3 with a 
pin, and the same discharge of milky secretion followed as they 
seem to vomit when disturbed. I procured soldiers, workers, 
and winged ants from the same post. I consider this im- 
portant, as the different species swarm together, and it would 
be difficult to distinguish them otherwise. 
I took some of No. 3 (7. testaceus L.) to No. 1 (Hutermes 
worker)—what I call the common wood-ant—and though they 
had mustered hastily and turned out in force to repel the in- 
vading army of their own kind a few days before, they avoided 
the milk-men, and attempted to push them away from their 
broken galleries in one or two instances. ‘They seemed dis- 
gusted with the milky secretions, and only desirous to be left 
alone. 
May 7th, 1888. ‘To-dayI tore down a portion of the casing of 
my office window to solve the mystery of No. 3 (7. testaceus L.). 
I found the wood-work a mere shell, and the space that was once 
solid occupied by a mass of pasty material, evidently composed of 
what seemed to be wood chafings mixed with some moist gluti- 
nous substance formed by the ants, and constructed into runs and 
galleries. What surprised me most was its moist natwre in such 
dry weather. I am now satisfied that thisis the same kind of ant 
that formed the nest in the tie-beam that I sent you. ‘The ma- 
terial, as a nest, is entirely different in character from No. 1 
(Hutermes). Lobserve that No. 3 (7. ¢estacews L.) does not form 
runs or galleries on the swrface and away from its work of de- 
struction, but confines itself within the beam or post where it is 
working. No. 1 (Hutermes) will make nests up in a tree, or on a 
fence-rail or post, or under the roof of a building, away from its 
work of destruction, and then run its tracks or galleries there- 
