104 Mr. F. Townsend on a supposed new species of Glyceria. 
The walls were much the thickest on the north side, nearly 
double those on the south, measuring 14 foot through. 
It being in a locality where sand and gravel abounded, their 
materials were freely mixed with the clay. 
The covered ways leading from the base to objects ef plunder 
at a distance were in this case larger and more numerous than 
any I have seen before. The main one measured 12 inches in 
diameter, and gave off several branches which proceeded in va- 
rious directions. These were traced to sticks, stumps and logs, 
which afforded them prey. 
In this case the labourers in the hill were generally of the 
smaller class, while those in the covered ways and in the stumps 
were larger, having strong, stout jaws, well-adapted to the gnaw- 
ing of wood. The “royal chamber” was found raised about 13 
foot above the level of the ground. 
Hill 3rd.—Cireumference at base, 50 feet. Height, 14: feet. 
The notes do not state whether this is the perpendicular height 
or not. Several fresh turrets were erected on the top, having a 
moist, deep red, granular appearance. 
The structure called the “royal chamber ” measured externally 
10 inches in length, internally 8 inches. Its height from the 
level of the ground was 2 feet 8 inches. The length of the queen 
43 inches. 
Shrubs or small trees are frequently seen growing up through 
the hills. Such trees are never seen dead, consequently are not 
eaten by the insect. 
XI.—On a supposed new species of Glyceria. 
By Freperick Townsenp, B.A.* 
In 1846 I drew up a description of a supposed new species of 
Glyceria, which had probably been confounded with other de- 
scribed species, viz. G. fluitans and G. plicata ; and a paper on the 
three plants was read before the Botanical Society of Edinburgh 
on November 9 in that year, but for the purpose of adding the 
results of further observations, it was not then published. Re- 
vised characters for, and some remarks upon, the three supposed 
species are now again submitted to the Society. 
In my former paper I applied the name of G. hybrida to the 
new plant ; but as the use of that word might lead to erroneous 
theoretical conclusions, I now substitute the name of G. pedicel- 
lata. The specific characters may stand as follows :— 
1. Glyceria fluitans (R. Br.). Panicle simple, elongate, sub- 
secund, spreading whilst in flower, otherwise close ; branches 
* Read before the Botanical Society of Edinburgh Dee. 13, 1849. 
