Shells of the National Pari 
By B. C. Cotton 
'JTHE molluscan fauna of the National Park is of two types: 
the land and the freshwater. The land forms consist of 
native snails, slugs, and introduced species. The largest of the 
native species is Rhytida gawleri, distinguished by a depressed, 
unbilicated, shining, horny brown shell, of about an inch in 
diameter, with dark, reddish, oblique streaks. It is found beneath 
stones and in the shelter of close, low vegetation. Bednalks 
Snail, Badistes bednalli, is nearly as large, and is widely distri- 
buted about the Mount Lofty Ranges ; it is readily distinguished 
by the reddish ring surrounding the umbilicus on the base. The 
Southern Amber Snail, Sue cine a australis , is a thin, transparent, 
Fig. 34- 
Succinea australis. 
Fig. 35- 
Rhytida gauderi. 
Fig. 36. 
Papilla australis. 
spirally-conical shell of about half an inch in length, and may 
be found in low vegetation and sometimes climbing up vertical 
posts and trees to a height of several feet. Easily distinguished 
from the former species by its minute size, cylindrical form, and 
Fig. 37- 
A meria tenuis triatus 
Fig. 38. 
Ameria aliciae 
Fig. 39- 
Myxas papyracea 
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