APPENDIX, NO. I. 
255 
MOLUSCA UNIVALVE!) SHELLS. 
Bulla? Plate II., fig. 2. 
Fig. 17 Natica — small. 
18 - large species. 
Dentalium ? 
19 Trochus. 
20 Turritella. 
in gyps. 
21 Murex. 
22 Buccinum ? 
23 Mitra. 
24 very short. 
25 Cypraea. 
26 Conus. 
27 (Plate II., fig. 3.) 
28 Two, unknown. (Also Plate II., tig. 4.) 
The above all appear to belong to the newer tertiary 
formations. 
A block of coarse red granite forms an island in the centre 
of the river near the lake, but is nowhere else visible, although 
it is very probably the basis of tbe surrounding country. 
ROCK FORMATION OF THE COAST RANGE OF ST. VINCENT’S 
GULF. 
Primitive Transition Limestone.— Light grey, striped. Altered 
in appearance by volcanic action ; occurs on the Ranges 
north of Cape Jervis. 
Granite. — Colour, red; found on the west side of Encounter Bay. 
Brown Spar. — South point of Cape Jervis. 
Sandstone, Old Red. — East coast of St. Vincent’s Gulf. 
These genera are scarce- 
ly ever, and some of them 
not at all, found in any 
but tertiary formations. 
