58 FRESH-WATER POLYZOA FOUND IN THE 
were, at this time, very numerous and beautiful, and plainly 
seen through the transparent skin of the animal. On the 29th 
October, when the animal was completely destroyed, the Stato- 
blasts collected into an oval sac, which floated on the surface 
of the water. This I observed in a specimen placed in my own 
aquarium, thus showing that when the animal has performed 
the functions assigned to it, it dies, leaving the Statoblasts to 
continue the species. 
I have no record of it for 1875. 
On the 7th and 19th August, 1876, some very fine specimens 
were found in the same place by Mr. Mannina. 
It was carefully searched for in 1877, but could not be found. 
Its disappearance I attribute to the removal of the weeds from 
the Canal Bank. 
In September, 1878, two colonies only were found near 
Backford Bridge. 
Lophopus erystallinus, Pallas. 
Specific character.—Cenecium sacciform, hyaline, with a dise which 
serves for attachment but not for locomotion; ectocyst gela- 
tinoid ; orifices scattered. Statoblasts elliptical, with an annulus, 
but without marginal spines.—Aliman. 
This was the first of the fresh-water Polyzoa found in this 
locality. It was discovered by Dr. SronTerrorH in January, 
1872, in a ditch running from Queen’s Park to the river. The 
specimens were very large and beautiful, and being the first 
seen here, they created intense interest. The same ditch has 
been diligently searched every year since, without success. 
Another habitat, however, has yielded a rich supply. It is 
a pond on the north of the Lache Lane, in which they were 
first found on 2nd March, 1876, and were then very fine; and 
also in April; but at the end of May I searched for them in 
vain. On the 29th December of the same year, I found a few 
very young specimens, and in February, 1877, they were larger ; 
but at the latter end of March and early in April they were 
very fine and fully developed. On the 24th May I found them 
