NEIGHBOURHOOD OF CHESTER. 61 
Fredericella sultana, Blumenbach. 
Specific character.—Coenecium confervoid, composed of a membrano- 
corneous branched tube, with the branches distinct from one another and 
terminated by the orifices. Lophophore nearly circular ; tentacular crown 
campanulate. Statoblasts bean-shaped, destitute of annulus and spines. 
—Aliman. 
This was first found in this district on 21st June, 1872, in 
the Canal near the College; and on 13th and 20th September, 
1874, it was very plentiful in the Canal, near Backford; but on 
the 4th November, very few were alive. Some of the tubes, 
with Statoblasts, placed in my aquarium, began to develop on 
the 11th February, 1875, and on the 8rd March some more 
hatched, and on the 6th they had grown considerably. 
Found some very young forms in the Canal on 25th March 
in the same year, attached to young Spongilla, which seemed to 
thrive well together, and both were very interesting and beautiful. 
On the 18th March, 1877, found several very young forms, 
none of them with more than two, and some with only one 
Polypide, from which a bud was seen growing near the top of 
the Polypidom. 
The latter end of April the Iredericella was abundant. The 
opening of the Statoblast is very curious, and resembles that of 
a bivalve-shell, from which the animal protrudes and soon 
forms a tube, and grows rapidly into a colony by budding. 
This species is the most abundant of all, and is found in the 
Canal close to Chester, and for a considerable distance on either 
side of it. 
Paludicella Ehrenbergi, Van Beneden. 
Specific character.—Ccencecium membrano-corneous, branched; branches 
composed of a series of claviform cells placed end to end and 
separated from one another by complete septa; orifices tubular, 
lateral, placed near the wide extremity of each cell. Lophophore 
orbicular, no epistome or calyx. Statoblasts not observed.— 
Allman. 
This was first found in this locality on the 29th of April, 
1877, near the Canal Locks, next beyond Tarvin Road Bridge. 
It was afterwards found in the same place in May and August, in 
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