PLATE XLVII. 



Figure 1. C(elopleurus Sindensis^ Duncan and Sladen (page 298). 



2. An apical plate, the radial III., magnified. 



3. Temnechinus Rousseaui, d'Archiac (page 303). The test, natural size. 



4. The interradium and ambulacrum near the peristome, magnified, showing the structure 



of the ambulacral plates. 



5. Lepidopleurus hemispHjERicus, Duncan and Sladen (page 306). 



6. The apical system and part of the test, magnified. 



7. Part of the test near the ambitus, magnified. 



8. Temnechinus stellulatus, Duncan and Sladen (page 304). 



9. Part of the side of the test, magnified. 



10. Temnechinus Gajensis, Duncan and Sladen (page 305). A test. 



11. Part of the test, magnified. 



12. Temnechinus Rousseaui, d'Archiac. A plate and part of an ambulacrum, magnified. 



