EXPLANATION OF PLATE XVU. 



Figs, r, 2, 3. \' crticordia ericia, Hedley. Exterior, hinge 



and magnified sculpture. 

 Fig. 4. I'encricardia rosulenta, Tate. 

 Figs. 5, 6, 7, 8. Myrtcea bractea, Hedley. Lateral and 



superior aspects and hinges. 

 ,, y, 10, !i, 12. Corbis percostuta, Hedley. Exterior 



and interior aspects and hinges. 



