EXPLAXATION OF PLATE XXX. 



Mteonia morrisii, Eth.jil., car. P 



Fig. 1. Right valve. Notice the propoi'tioual elongation and wide 

 curvature of the diagonal ridge. It is probably a distinct 

 species. Lochinvar. 



,, 2. The same specimen, dorsal view. 



[Cardinia] cuneata, Dana. 



,, 3. Drawn from a reproduction of one of Dana's type specimens 

 (Wilkes U.S. Explor. Expedn., x., Geology, pi. iv., tig. 6) 

 by which, it will be seen, there are no radii. 



,, -i. Natural cast in the Museum Collection of the same species as that 

 represented by Fig. 3, but with radii. Wollongoug. 



,, 5. Another example similar to Fig. 4. Wollongoug. 



„ 6. A third radiate example. Wollongoug. 



[Cardinia] recta, Dana. 



,, 7. Drawn from a reproduction of one of Dana's type specimens 

 (Wilkes U.S. Explor. Expedn., x.. Geology, pi. iv., tig. 5). 

 " lUawarra." 



[Cypricardia] veneris, Dana. 



„ 8. A very transversely elongated, siliquiform bivalve, probably a 

 Stntchbttria, but distinct from both S. costata and N. conqjressa. 

 Wollongoug. L nat. 



Meeonia cariuata, var. minor, Etii. Jil. ? 



,, 9. Possibly a sub-variety, narrower and more elougate. A left 

 valve. Baudauoon Gully. 



