The Australian Naturalist 
Vol. IV.° APRIL 1, 1920. Part 10. 
NOTE.—Members having any matter of interest suitable for public- 
ation in these pages are requested to communicate with the Editor. 
ORDINARY MEETINGS. 
3rd February, 1920.—The President, Miss Le Plastrjer, in the. 
chair, and 45 members present. 
An announcement was made re the use of two microscopes 
kindly lent by the Department of Health for the benefit of 
members desiring to exhibit microscopic objects. 
Miss Hilda Butler and Miss Elsie Gough were elected mem- 
bers. 
Mr. H. E. Finckh exhibited a specimen of Riccia fluitans, 
with observations on the distinctive habits of the terrestrial and 
aquatic forms; Miss Le Plastrier some interesting examples of 
the Riverina flora, with notes suggestive of protective mimicry 
in certain Mistletoes; Mr. L. Gallard read a note on the life 
history and habits of the Dicky Rice Weevil Prosaleus phy- 
talymus, and exhibited specimens illustrative of the characters 
described. 
In an interesting address entitled “War in the Mangroves,” 
Mr. A. R. McCulloch gaye a terse account of the struggle for 
existence in which the inhabitants of the Mangrove swamps 
are constantly engaged. The lecture was illustrated by a fine 
series of lantern slides—some of which must have been secured 
under exceptionally difficult cireumstances—illustrating various 
phases in the life history of the creatures passed under review. 
March 2nd, 1920.—The President, Miss Le Plastrier, in the 
chair, and 35 members present. 
Miss R. Dowling and Mr. David Ferguson were elected 
members of the Society. 
Miss H. Drummond exhibited a set of geological specimens 
from Mona Vale, with a note on Phyllotheca: - Miss Winter con- 
tributed a note on an interesting experiment by which the 
