66 
The South Australian Naturalist. 
FRESH WATER MOLLUSCA COLLECTED AT 
FINNISS CREEK BY MESSRS. W. HAM AND 
E. H. ISING ON FEBRUARY 1st AND APRIL 5th 
By F. I'rigg. ■ 
Klelania balloiiensis. A number of these univalVes were taken 
. in the brackish marshes. - A turrcted shell of seven or eight 
cancellated whorls, with the apex, as usual, eroded. It has 
,a heav}' dark brown periostracum-; interior, bluish shade; 
horny operculu-m; length, averaging 2S mm, 
Bulimis injiata. ■ Common in most of our fresh water creeks and 
rivers, including the Tori'ens Lake.. The last , whorl is im- 
mensly inflated. It is surprising how quickly these shells 
proceed to make themselves at home in the smallest aquarium 
and numbers soon increase. The Bulinus are 'sinistraP, viz.’ 
when lield spire uppermost the aperture appears on the left. 
Glyptophysa Alicia'. A prettily-marked little univalve, also 
'sinistral.’ - 
Unio anibiguus. These large fresh water mussels were plentiful 
The brown periostracum is generally eroded at tjie umbo. 
Interior brilliantly nacreous. The fresh water Pelecypoda 
are ovoviviparous, i.e., the young being hatched within the 
gills before being expelled by the parent. Some concholor 
gists connect this shell with the marine bivalve Trigom. 
Corbicula Angasi. Plentiful on the mud flats, forming a favorite 
food of the wildfowl, often found in their crops in large 
numbers. 'Phis bivalve may be collected in the Torrens Lake 
. opposite Eider Park, It is a relative of the large mangrove 
swamp shell Cyrena and looks like a small Mactra. - 
■ April 29th, 1926. 
Mrs. ROWAN’S PICTURES. 
Members will remember the extremely beautiful pictures of 
native dowers that for some years decorated the walls of our 
lecture-room, and doubtless man}^ would prefer to see them 
again on the walls when the war pictures are exhibited in their 
proper place, the War Museum, which South Australia has been 
talking about for so many .years. . Mrs. Rowan painted pictures 
in almost every state, and the Federal government acquired a 
collection of 952 paintings at a bargain price of £5000. The 
admirers of Mrs. Rowan^s work In New South Wales, Queens- 
land and Victoria are proposing to have a portrait of Mrs. 
Rowan painted by an Australian artist to serve as a memorial 
to her service to science In painting her famous collection of 
representatives of the native flora of Australia and New Guinea. 
Many of our members will remember her as the author (and 
illustrator) of “Bill Bailey.^’ 
