PLATE 31. 
Eig. 1. Crioceras australe, Moore. The largest specimen but three known to the 
Author. Walsh River. 
Eig. 2. Natica variabilis, Moore (W. lineata. after Etheridge, Quart. Journ. Geol. 
Soc., xxviii., t. 21, f. 1). Maryborough. [R.D.] 
Fig. 3. Do. (After Moore, Quart. Journ. Gaol. Soc., xxvi., t. 10, f. 15.) 
Wolluinbilla. [W.R.C.] 
Eig. 4. Anchura ? Wilkinsovi, Eth. fil. Front view. Evora Station. 
Fig. 5. Do. The same specimen, back view. 
Fig. (5. Gastrochcem australis, Eth. fil. Fragment of the tube. Maranoa River. 
Fig. 7. Do. Cross section of Fig. 6. 
Eig. 8. Do. Surface of the tube much enlarged, showing anastomosing lines, 
caused by the wearing down of the shelly-frills. 
