Vill THE VOYAGE OF H.M.S. CHALLENGER. 
VII.—On tHe Hasits oF RECENT CRINOIDS, AND THEIR PARASITES, 
Modes of Attachment, 
Myzostoma, 
VIII.—Tue GrocraPHIcAL AND BATHYMETRICAL DISTRIBUTION OF THE CRINOIDS, 
A. Geographical Range, 
B. Bathymetrical Range, 
C. The Association of the Genera at Pavioulat Stations: 
IX.—On THE RELATION BETWEEN THE RECENT AND THE Fossii Neocrinoips, 
X.—On THE RELATIONS OF THE NEOCRINOIDS TO THE PALMOCRINOIDS, 
The Miillerian Classification ; Articulata and Tessellata, 
General Characters of the Neocrinoids, 
Structure of the Calyx, 
Characters of the Arms, 
The Disk and Oral Plates, 
The Vault of the Paleocrinoids, 
Vault of Haplocrinus, Allagecrinus, and Conturenas, 
Vault of Cyathocrinus, 
Subtegminal Ambulacra, 
Vault of Actinocrinide, 
Homologies of the Calyx and Dorie Plates 
Radial Dome Plates, 
Vault of Platycrinide, 
Vault of Ichthyocrinide, ; . 
Vault of Glyptocrinus, Reteoerinus, and fees 
XT.—CLAssIFICATION, : 
Definition of the Pelmatozoa, 
Definition of the Crinoidea, . 
Other Systems of Classification, 
Characters of the Pelmatozoa, 
Definition of the Neocrinoidea, 
XII.—Descrretion or THE SPECIMENS, 
Family Holopide and Genus Holopus, 
A. General Account of the Type, 
Holopus rangi, VOrbigny, 
The Calyx, ‘ 
The Axillary Radials, . 
The Arms, 
The Disk and ienbulaera! 
Anatomy of the Arms, . : 
B. On the Systematic Position of Holopus, 
Cyathidium, 
Cotylecrinus, 
Eudesicrinus, 
Gymnocrinus and Micropchnas 
Edriocrinus, 
