434 



TliH VOYAGE OF H.M.S. CHALLENGER. 



Circular commissure, 40, 117, 413; of Batlujcriiius, 

 126, 228-230; of Comatula?, 125; of Penta- 

 crinits, 125; oi Rhizocrimis, 126, 253. 



Circuinvisceral coelom, 67. 



Cirri, 7, 107, 108, 114, 132, 414 ; of Bnurgueticrinida?, 

 27, 28; of ComatuLi?, 132, 414; of Pentacri- 

 nidffi, 12, 288, 342. 



Cirrus-vessel, 15, 23, 107, 292, 412. 



Clijpeaster, 394. 



Gor.cocrlmui, vault of, 160-163, 170, 174, 175, 178, Ic^a. 



Comaster, 151, 403. 



Oomatula, 3, 4, 6, 8-10, 18, 19, 22, 24, 25, 33-36, 38, 

 40, 44, 45, 48-53, 55, 56, 58, 59, 62, 

 63, 68, 70-74, 76, 78, 83-85, 88, 90, 91, 

 93-95, 97, 106, 107, 110, 117, 119, 

 124, 125, 130-135, 144-148, 154-156, 

 164-166, 169, 175, 177, 181,183-185, 

 192, 230, 249, 252, 254, 255, 261, 273, 

 277, 279, 285-287, 289-294, 316, 319, 

 324, 326, 337, 340, 363, 370-372, 393, 

 401, 412, 413, 415. 

 Ambulacra of, 68, 156; ambulacral plates 

 of, 62, 74, 83, 84, 175, 181 ; arms of, 52, 

 55, 147, 337; axial cords of, 119, 121- 

 123, 408, 409; basals of, 34-36, 251, 

 284, 402, 403 ; ceutro-dorsal of, 25, 106, 

 107, 132, 292; chambered organ of, 106, 

 107, 292, 404, 412; circular commissure 

 of, 125 ; cirri of, 132, 414 ; disk of, 68- 

 70, 84, 85, 90 ; geographical and bathy- 

 metrical distribution of, 136-141 ; mon- 

 strosities of, 70; oral plates of, 71, 72, 

 156; pinnules of, 58, 59, 83; radials of, 

 147, 289, 293, 294 ; reparation of, 60, 

 255 ; syzygies of, 4, 53. 



ComatulidEe, 142, 192, 370. 



Conocrinus, 245, 247, 248. 

 cornutus, 258. 

 pyriformis, 248, 257. 

 seguenzai, 257. 

 suessi, 257. 



Consolidating plates of Cupressocrinus, 162. 



Convoluted organ of Actinocriuidae, 87, 165. 



Costal plates, 396-399. 



Costata, 190, 195. 



CotylecHnus, 68, 143, 161; systematic position, 213- 

 217. 

 downs, 213. 

 miliarig, 214. 



Cotijlederma, 213. 



Covering plates, 62-66, 74-83, 115, 16G, 173-175, 



181, 185, 220. 

 Crinactinota, 190, 191. 

 Crinoidea, 186, 187, 188-195. 

 Crotulocrmus, 54, 65, 66, 157. 



pinlchci; 65. 

 C'ulicocrinus, summit plates of, 170, 175. 

 Cupressocrinus, 48, 150, 152, 153, 162. 

 Cupule of Cofi/lecri)ui.y; 213, 214. 

 Cyathidium, 143, 202; systematic position, 211-216. 



spileccense, 212. 

 Cyathidiocrinidse, 211. 



Cyathocrinid*, 153, 155, 160, 162, 164, 173, 181. 

 Cyathor.rlnm, 44, 45, 48, 60-66, 146, 151, 154, 161- 

 164, 169, 173-175, 178, 18-5, 224, 

 394-398. 

 alutaceiis, summit of, 173. 

 iowensis, ambulacra of, 65. 

 Icecis, summit of, 173. 

 longimanus, ambulacra of, 65, 66, 84. 

 malvaceus, summit of, 172. 

 ramosus, ambulacra of, 66. 

 Gydohlastus, 191. 

 Cydocystoides, 192. 

 CystidoB, 192. 



Cystidea, 54, 109, 132, 148, 149, 154, 186, 188-19.'). 

 CystoUastus, 191. 

 Cystoidea, 186, 195. 

 Deltoid pieces of the Blastoidea, 162. 

 ' Democrinus, 28-30, 245, 264, 268, 269. 

 parfaiti, 262, 264, 269. 

 Dendrocrinus casei, 45. 



navigiolum, 20. 

 Dichocrinus, 39, 222, 223. 



intermedins, 223. 

 Digestive tube, 1, 84, 86-92. 



Disk, 1, 67, 75, 80, 81, 84, 85, 88, 90, 182, 184, 342 ; 

 of Adinometra, 69, 70, 85 ; of Antedon, 68, 84, 

 85 ; of Bathycrirms, 234, 235 ; of Hyocrinus, 

 219; of Metacrinus, 59, 68, 80, 81, 93, 342; 

 of Pentacrinus, 68, 76, 77, 91, 279. 

 Distichals, 49, 50, 177. 

 Dorsocentral, 18, 132, 157, 158, 168, 169, 274, 275, 



393-396, 398-400. 

 Ediinosphoerites, 192, 195. 

 Echinozoa, 95, 105, 106, 193, 194, 406. 

 Edrioaster, 192. 



j Edriocrinits, 143, 194, 195, 217, 319. 

 j Eleacrinus, 164, 173. 

 j Eleutherocrinus, 132. 



