BY C. HEDLEY AND C. T. MUSSON. 563 



B. pryamidatus, Sowerby. 

 Gracemere. 



B. fusiformis, Nelson and Taylor. 



Facing Island. 



The above forms of Bulinus are recorded, but the writers do 

 not endorse their claims to specific rank, which in some instances 

 are extremely shadowy. Upon few genera has synonymy, that 

 curse of Babel upon science, fallen heavier than upon the 

 Australian Bulinus. The bewildering multiplicity of names 

 applied to a few protean forms needs most careful sifting by a 

 local student ; any foreign author who should attempt the task 

 with but a handful of material would make confusion worse 

 confounded. 



Ancylus australicus, Tate. 



Torsdale. 



Planorbis gilberti, Dunker. 



Plentiful. 



Miriam Vale, Gracemere, Coomooboolaroo, Bogantungan, Calli- 

 ungal, Cania and Banban. 



Segmentina victoria, E. A. Smith. 

 Coomooboolaroo, Calliungal and Banban. 



Melania tatei, Brazier. 



Miriam Yale, Warro, Gracemere, Jewel Creek, Rockhampton, 

 Coomooboolaroo, River Medway, Bogantungan, Lake Victoria, 

 River Dee, Calliungal and Banban. 



M. denisoniensis, Brot. 

 Jewel Creek, Rockhampton. 



M. queenslandica, E. A. Smith. 

 Colosseum Creek, Miriam Vale. 



Hydrobia brazieri, E. A. Smith. 



River Barambah at Banban, Calliungal. 

 37 



