PLATE XLTII. 



Figure 1. Echinolampas tumida, Duncan and Sladen (page 265). Side view. 



2. Actinal viewj natural size. 



3. Plates of anterior odd ambulacrum^ worn, showing the obliquity of the poriferous zone, 



magnified. 



4. Part of a poriferous zone, showing the ornamentation of the costse, magnified. 



5. Actinal ornamentation, magnified. 



6. Euspatangus rostrattjs, d^Archiaq (page 267). 



