On a fresh-water sponge from Tasmania

Very few fresh-water sponges have been recorded from Australia—some nine or ten species in all, not one of which is Tasmanian.
The sponge referred to in the present note is apparently the only Tasmanian form yet obtained.
Its discovery was due primarily to the enthusiasm of F. A. Callaway, Esq., of Wynyard, who takes a keen interest in the natural history of his own district.