PLATE XXVIII. 



Figure 1. Echinolampas rotunda^ Duncan and Sladen (page 152). Abactinal view of the 

 test^ natural size. 



2. Actinal view of the test, natural size. 



3. Longitudinal profile of the test, natural size. 



4. The apical disk, magnified. 



5. A portion of a petal, about midway between the extremity and the apex, magnified. 



6. The peristome and surrounding portions of the test, magnified. 



7. Echinolampas subconica, TDuncan and Sladen (page 155). Abactinal view of the 



test, natural size. 



8. Actinal view of the test, natural size. 



9. Longitudinal profile of the test, natural size. 



10. The apical disk, magnified. 



11. A portion of a petal about midway between the extremities, magnified. 



12. Echinolampas obesa, Duncan and Sladen (page 157). Abactinal view of the test, 



natural size. 



13. Actinal view of the test, natural size. 



14. Longitudinal profile of the test, natural size. 



15. The apical disk, magnified. 



16. A portion of a petal, about midway between the extremities, magnified. 



