EXPLANATION OF I'LATE XXIX. 



Martiuiopsis subradiata, oar. brauxtoueusis, Eth. fil. 



Fig. 1. View of brachial, and umboual region of pedicle valve ; the former 

 is bi-plicate. Branxton. 



,, 2. A similar specimen to that represented in Fig. 1, multiplicate. 

 Farley. 



Dielasma in versa, de Konincl:. 



,, '.\. Brachial, and umbonal portion of pedicle valve, with little or no 

 trace of lateral folds. Wollongong. 



,, 4. A similar specimen to that represented in Fig. 3, with lateral 

 folds more marked. Wollongong. 



Maeonia carinata, car. minor, Eth.jil. 

 ,, 5. Left valve. Bundanoon Gully. 



„ 6. Right „ 



,, /. Lett ,, ,, ,, 



,, 8. Dorsal or cardinal view. Bundanoon Gull v. 



