On a new species of Ampullaria

I beg to bring under the notice of the Society a new species of Ampullaria, a genus hitherto unknown in the Australias. Some time since I described all the known freshwater- shells of the island which duly appeared in last year's transactions. Since then I have described a new Valcata, V. tasmanica which was discovered by that most industrious entomologist, Aug. Simson, who obtained it from a creek in Gould's Country. Since then in looking over some shells kindly placed at my disposal by Ronald Gunn, Esq., F.L.S., I have found the Ampullaria which I now describe.