PLATE XXX. 



Figure 1 . Echinolampas angustiT'olia, Duncan and Sladen (page 164). Abactinal view of 

 the test, natural size. 



2. Actinal view of the same, natural size. 



3. Longitudinal profile of the same, natural size. 



4. Actinal view of a smaller specimen, natural size. 



5. Transverse profile of the same specimen, seen from behind, natural size. 



6. Abactinal view of the test of a young specimen, natural size. 



7. Actinal view of the same, natural size. 



8. Longitudinal profile of the same, natural size. 



9. Transverse profile of the same, seen from behind, natural size. 



10. Peristome of the same specimen, magnified. 



11. Primary tubercles on the actinal surface of the same specimen, magnified. 



12. EcHiNOLAMPAS NUMMTJLiTicA, Duucau and Sladen (page 167). Abactinal view of 



the test, natural size. 



13. Actinal view of the test, natural size. 



14. Longitudinal profile of the test, natural size. 



15. Actinal portion of the left anterior ambulacrum, magnified. 



16. EcHiNOLAMPAS JUVENILIS, Duucau and Sladen (page 170). Abactinal view of the 



test, natural size. 



17. Actinal view of the test, natural size. 



18. Longitudinal profile of the test, natural size. 



