PLATE IV. 
Pig. 1. 
Pig. 2. 
Pig. 3. 
Pig. 4. 
Pig. 5. 
Pig. 6. 
Pigs. 7, 
Pig. 10. 
Maccoyella umbonalis, Moore, sp. 
Interior of a left valve in an indifferent state of preservation, but showing the massive 
cardinal area, adductor scar, and lenticular shell structure. 
Near Milparinka. 
Maccoyella reflecta, Moore, sp. 
Cardinal region of the united valves, exhibiting in apposition their various parts. On 
the left is the large gap left by the posterior pyriform resilium, and beyond it the 
posterior linear resilium ; in the centre is the chondrophoral button, and on the 
right the scobinate lamella*. 
Near Milparinka. 
Maccoyella Barklyi, Moore, sp. 
Interior of a portion of a left valve, displaying the characters of the cardinal margin, 
and the reniform adductor scar. 
Near Milparinka. 
Kaolinised shale cast of the exterior of a left valve, showing costae. 
White Cliffs. 
Cucullaea? Nth. Jil. 
Eight valve, side view. 
Cardinal or dorsal view of Pig. 5. 
Mount Poole Station. 
Isocrinus australis, Moore, sp. 
8, 9. Three views of a part of the dorsal cup and arms, partially replaced by precious 
opal. 
The imperfect dorsal cup, showing portions of IBr. 
White Cliffs. 
