PLATE XLI. 



Figs. 1-4. Metaurinus cingulatus. n. sp 



Fig. 1. Portion of the stem, 



Fig. 2. Upper face of a nodal joint, 



Fig. 3. An intei'nodal joint, 



Fig. 4. Side view of a brachial ambulacrum, 



Figs. 5-11. Metacrtnus nobilis. n. sp. 



Fig. 5. Portion of the stem, . . . . . 



Fig. 6. Upper face of a nodal joint, . . . . 



Fig. 7. An intemodal joint, . . . . . 



Fig. 8. An internodal joint of a small specimen, 



Fig. 9. One of the distichal pinnules, 



Fig. 10. One of the outer pinnules, . . . . 



Fig. 11. The arm-groove and brachial ambulacrum, 



Figs. 12-17. Metaceinus mureayi, n. sp. 



Fig. 12. The lower part of a pinnule-ambulacrum, 

 Fig. 13. Side view of a brachial ambulacrum, . 

 Fig. 1 4. An arm-groove and brachial ambulacrum. 

 Fig. 15. Portion of the stem, . 

 Fig. 16. Upper face of a nodal joint. 

 Fig. 17. An internodal joint, . 



