56 THE MOLLUSCAN FAUNA OF TASMANIA. 
Pecten laticostatus, south coast only, small and rare. Limopsis 
decussata, doubtfully on the north coast. Cylichna arachis 
common. Liotia discoidea, rathercommon. Fissurella conical 
rather rare, and in Sydney. 
Discussion. 
- The Cuarrman said, pars the same thing occurred with the 
vegetable kingdom as with the animal, as “described by Mr. 
Tenison-Woods. Along our own beak and the coast of Queens- 
land there were upwards of 200 species of ferns, whereas on the 
west wie of Australia there were not more than two or three 
species. As we go to the southward and westward the number of 
ferns decrenses, while as we go to the north the number increases. 
t 
short papers read in arias to excite discussion. He believed if 
they had short papers read, they would excite discussions that 
best be both interesting and instructive to the members of the 
Dr. Net thought, with regard to the suggestion of the Chair- 
man, the idea about discussions could be carried out in even @ 
simpler way, namely, by m saa having the power to propose 
certain subjects. He was a member of an institution in England, 
and they met once a month and had exceedingly valuable dis- 
cussions in this way. He thought the se if carried out, wou uld 
ings. 
The onccpee thought that could only be done by means of 
short papers. 
