THE VOYAGE OF H.M.S. CHALLENGEE. 



XIII. 



Definition of genus Metummis, 



Synopsis of the Species, 

 Metacrinus amjulatus, n. sp., 



cingulatus, n. sp., 



murrai/i, n. .s]i., 



nobilig, n. sp., 



varians, n. sp., 



moseleyi, n. sp., 



loyvillii, n. sp., 



contains, n. sp., 



nodosus, n. sp., 



interruptus, n. sp. 



iuherosHS, n. sp., 

 Family Comatnliilw, and Definition of genus Thaumatocrinux, 

 Tluiumatocrinus renovatus, P. H. Carpenter, 



-Bathymetrical Distribution and Station List.s, 



Station List of the Stalked Criuoids which have been obtained by the various liritis 



Expeditions for Deep-Sea Exploration between the- Years 1868 and 1880, 

 Station List of the Stalked Crinoids which have been obtained by the various American 



Expeditions for Deep-Sea Exploration (mostly under the direction of Mr. Alexander 



Agassiz) between the Years 1867 and 1880, 



A List of the known Living Species of St 



Geographical Distribution, 

 Analysis of this List, 

 Bathymetrical Tables, 

 Summary, 

 Crinoids of the Abyssal Zone, 



alked Crinoids, showing their Bathymetrical and 



page 

 339 

 344 

 345 

 347 

 349 

 351 

 353 

 355 

 358 

 360 

 364 

 367 

 369 

 370 

 372 



374 

 374 



379 



38.5 

 388 

 388 

 390 

 391 



APPENDIX. 



Note A. — On the Homologies of the Criuoidal Calyx in the other Echinoderms, 



Apical System of Urchins and Starfishes, 



Origin of the Odontophores of Starfishe.?, 



The Mutual Relations of Crinoids, Asterids, and Echinids, 

 Note B. — On the Basals of Fossil Comatulse, ..... 

 Note C. — On the Excentric Position of the INIouth in Actinometru, 

 Note D. — On the Supposed Communication of the Chambered Organ and Labial Plexus w 

 Note E. — On the Intervisceral Blood- Vessels, ..... 

 Note F. — On the Eelation of the Vascular Systems of a Crinoid to those of the other 

 Note G. — The Nervous System of the Crinoidea, .... 



The Nervous Nature of the Axial Cords, 



Their Morphology and Development, 



Nervous System of the Blastoids, 



The third Nervous System of Jickeli, 



Bibliography of the Neocrinoidea, 

 Index to Authors quoted, 

 General Index, .... 



Explanation of the Plates, . 



