PLATE 40. 
Fig. 1. Dielasma ? sp. ind. Internal cast o£ the dorsal valve of an imperfect speci- 
men. Rockhampton District. [De V.] 
Eig 2. Do. Internal cast of the greater portion of the united valves. [DeV.] 
Pig. 3. Spiri/era (allied to S. oviformis , McCoy). Internal cast of the dorsal (?) 
valve. Itockhampton District. [DeV.] 
Eig. 4. Productus, sp. ind. A decorticated example, with a concentrically lined 
visceral region and a coarsely costate front, somewhat 
resembling a Strophomena. itockhampton District. [DeV.] 
Eig. 5. Productus subquadratus, Morris. Hinge and interior of the ventral valve, 
showing a broad area, deltidial opening, and dendritic 
muscular sears. Yatton Gold Eield. 
Eig. 6. Strophomena analoga, Phillips? Cast of the interior of the ventral valve, 
with the impressions of the muscular and vascular systems. 
Itockhampton District. [De V.] 
Eig. 7. Strophalosia Gerardi, King ? Impression of the exterior of a small dorsal 
valve. Banana Creek. [De V.] 
Eig. 8. Do. A ventral valve, with the test preserved, strong concentric laminae, 
and blunt recumbent spines. Darr River. [A.L.] 
Eig. 9. Pterinopecten Devisii, Eth. fii. Eight valve. Rockhampton District. [DeV.] 
Eig. 10. Nucula, sp. ind. Internal cast of the left valve of a very deltoid species, 
possessing an abrupt anterior end, and a short posterior 
hinge. Rockhampton District, x 3. [DeV.] 
Eig. 11. Mytilops ? corrugata, Eth. fil. Portion of a decorticated valve, with step- 
like concentric corrugations, x 3. Rockhampton District. 
[DeV.] 
Eig. 12. Parallelodon cosPllata , McCoy. Portion of a right valve, decorticated. 
Rockhampton District. [De V-] 
Eig. 13. Do. Internal cast of another right valve, with traces of transverse 
hinge teeth. Rockhampton District. [De V.] 
