PLATE VI.
C R IN O ID E A .
Figure 1. A ntedon E sch h ich t ii (Müller), Yerrill. Natural size.
2 . Diagrammatic sketch o f th e radial plates.
3. E x trem ity o f on e o f the dorsal cirri, magnified.
4 . A first pinnule, magnified.
5 . A n t e d o n c e l t ic a (Barrett), Norm an. Na tu ra l size.
6 . Diagrammatic sk etch o f th e radial plates.
7. A n t e d o n p k o l ix a , Sladen. Na tu ra l size.
8 . Diagrammatic sketch o f th e radial plates.
9. E x trem ity o f one o f th e dorsal cirri, m agnified.
10. J o in ts w ith pinnules attached, from near th e middle o f a ray, magnified.
P la to VI.
A rctic Comatulcc.