PLATE III. 



Hemipedina cubensis,/. 1-7. 



1. Specimen, measuring 12. 7""' in diameter from above. 



2. Same irom below, denuded. 



3. Portion of test of same specimen. 



4. Portion of ambulacral area, showing arrangement of pores. 



5. Profile outline of test, nat. size. 



6. Large pedicellaria, from test. 



7. Young of same. 



Salenia varispma,y; 8-1^. 



8. From above, | nat. size. 



9. From below, test denuded, same specimen. 



10. Portion of ambulacral and interarabulacral part of the test, magnified. 



11. Abactinal system and part of test, magnified. 



12. Flat spine of medium interambulacral area. 



13. One of the spines of the abactinal system. 



14. Different small flat spines occupying the median ambulacral areas. 



