PLATE XI.
                       EUCALYPTOCRINUS OBCONICUS, HALL.
                                        Page 365.
FIG. 1. Lateral view of a specimen of this species, showing the structure
of the body and first
            bifurcation of the rays.
                        EUCALYPTOCRINUS CRASSUS, HALL.
                                        Page 365.
FIG. 2. Lateral view of a well preserved cast of this species, which shows
the structure of the
            body in a very satisfactory manner.
 "   3. Basal view of the same specimen as fig. 2.
                       EUCALYPTOCRIINUS ORNATUS, HALL.
                                        Page 366.
FIG. 4. Basal view of the calyx of a specimen of this species. The figure
is from a gutta-percha
            impression taken in the natural mould of the exterior, and shows
the surface mark-
            ings of the plates.
 " 5. View of an internal cast of this species, of large size, which
preserves the impressions
            of the lines of growth of the plates.
            EUCALYPTOOCRINUS COIUNUTUS, VAR. EXCAAV.A TUS, HALL.
                                        Page 364.
FIG. 6. Basal view of an internal cast of this species, showing the deeply
excavated base.
c 7. Lateral view of the same specimen as fig. 6.
                       EUCALYYPT-OC'RIN US CORNIUTu S, HALL.
                                        Page 363.
FIG. 8. Shows the cavity left in the rock by the solution of the substance
of the crinoid. The
            inside of the cavity is occupied by the cast of the interior
of the cup of the specimen.
FIGS. 9, 10. Basal and lateral views of a gutta- percha cast made in the
natural mould left by the
            removal of the substance of the crinoid.
                         CYAiTHOcCRLVUS ivAUKoIA, HALL.
                                        Page 367.
FIGS. 11, 12. Lateral and basal views of an internal cast of this species.
                     a     C'YATHOCRINUS CORA, HALL.
                                        I Page 366.
FIG. 13. View of the anal side of a specimen of this species, showing the
position of the anal plate.
    14. Lateral view of a larger individual of the species, showing more
distinctly the radiating
            lines of the plates. (Some larger specimens observed are very
decidedly constricted
            above the base.)