PLATE 38. 
Eig. 1. Monliculipora , sp. ind. General feathery-like outline of the corallum. x 3. 
Kooingal. 
Eig. 2. Do. A small portion of the surface, highly enlarged, showing the calices 
and acanthopores. 
Eig. 3. Platycrinus ? nu,x, Eth. fil. Internal cast of a part of the calyx. Mount 
Britton Gold Eield. 
Eig. 4. Spirifera StutcMurii, Eth. fil. Internal cast of the dorsal valve. Mount 
Britton Gold Field. 
Eig. 5. Do. Ventral valve of the same specimen. 
Eig. 6. Do. Side view of the united valves. 
Eig. 7. Productus subquadratus, Morris. Internal cast of the ventral valve. Mount 
Britton Gold Eield. 
Eig. 8. Do. Side view of the same valve. 
Eig. 9. ' Internal cast of the dorsal valve, showing the impressions of the long 
septum and muscular scars. 
Eig. 10. Do. Portion of another dorsal valve, with the impressions of the 
septum and cardinal process extending far into the cavity, 
the ventral umho, also the muscular impressions. Mount 
Britton Gold Eield. 
Eig. 11. Productus cor a, D’Orbigny. Impression of the exterior of the dorsal valve. 
Mount Britton Gold Eield. 
Eig. 12. Modiomorpha mytiliformis, Eth. fil. Decorticated right valve (probably the 
young condition of PI. 41, fig. 4) . Mount Britton Gold Eiel 
Eig. 13. Do. Hinge and united valves of the same specimen. 
