INDEX TO WOODCUTS. 



PAGE 



Fig. 1. Calyx oi Promachocriwis hvrgueleuiiitt, . . .... 37 



Fig. 2. Diagram showing the course of the Digestive Tube iu an endocjclic Crinoid (Aufcduii, Penta- 



crinus, &c.), as seen from the ventral side, ...... 89 



Fig. 3. Diagram showing the course of the Digestive Tube in an Adinometra with Interradial Mouth, 



as seen from the ventral side, ........ 92 



Diagrammatic transverse section of an iingrooved ovarian pinnule of Adinometra jiarvicirra, . 113 



Diagrammatic transverse section through the end of a grooved pinnule of Adinometra 



paroinrra, . . . . . . . . . . .121 



Longitudinal section of a pinnule joint of ^rf//(omrf)v( /(«>//•«, ..... 121 



Longitudinal section of tlie ventral perisome in a pinnule of Adinometra nigra, , .122 



Diagrammatic transverse section of an ambulacrum on the disk of Anfedo7i esdiridifi, . . 123 



Interradial plates of ^|)W(;)TKM»' rowsy«?H(s, . . . , . . .183 



View of the upper part of the calyx-tube of Hohpus rnngi, on its lower or bivial side, . . 203 



Diagram of a horizontal section through the lowest portion of the basal ring of Bathycrinus 



aldridiiaims, ......>... 226 



Fig. 12. Diagram of a horizontal section through the calyx of Bathycrimis aldridiianns at the level 



of the upper part of the Lasiradial suture, ....... 228 



Fig. 13. Diagrammatic vertical section through tlie calyx of Bathycrinus aldridiiamis, . . . 229 



Fig. 14. Plan of the distribution of the axial cords in the calyx of Bathycrinus cddrichianus, . . 229 



Fig. 1-5. Bathycrimis camphelUanns, n. sp., ........ 239 



Fig. 16. Bathycrimis gracilis, y^j\\\\&T\\oms.ow, ....... 244 



Fig. 17. Diagrammatic vertical section through the calyx and disk of iiA/.W(;?Vm« Zo/ofen«6-, . . 251 



Fig. 18. Diagram of the distribution of the axial cords in the calyx of Rhizoerinus lofotensis, . . 253 



Fig. 19. The calyx and arm-bases of two specimens of Rhizoerinus raiosoni from Panama, . . 267 



Fig. 20. Diagram showing the arrangement of the axial cords in the calyx of a Pmtremites, supposing 



it to be the same as in the calyx of a Crinoid, . . . . . .413 



Fig. 21. Tiari'chinus princeps, Laube, inverted so as to show the resemblance of its apical system to the 



calyx of a Crinoid, . . • • • • • • ^'^''^ 



