2 
=“ 
45 
Anchylosis, 3, 37. 
Ancyrocrinus, 19. 
Antedon, 33, 36, 57, 68, 74, 94, 127, 129, 143, 144, 
154, 237, 249, 268, 291, 376-385, 402- | 
404; ambulacra of, 83-85 ; digestive tube | 
of, 88, 89; disk of, 68, 84, 85; geographi- 
cal and bathymetrical distribution of, 136— 
141; labial plexus of, 97-100, 404-407 ; 
plexiform gland of, 101, 102, 235. 
acoela, 57, 83, 84, 93, 109, 110, 113, 128 
~(PL liv. figs. 1-4; Pl. lv. fig. 5). 
angusticalyx, 57, 83, 84, 93, 109, 110, 113, 
128, 135 (PI. liv. fig. 5 ; PL ly. fig. 6). 
antarctica, 92, 98. 
basicurva, 84 (Pl. liv. fig. 9; Pl. lv. fig. 7). 
campichei, 144. 
carinata, 98, 109, 124, 130, 137, 235 (Pl. Ix. | 
fig. 2). 
dentata, 36, 130, 137. 
eschrichti, 10, 52, 55, 62, 67, 78, 83, 88, 90, 
92, 93, 95-102, 109, 111, 112, 114, 118, 
120, 122-124, 133, 137, 144, 153, 208— 
210, 319; ambulacral nerve of, 112, 118, 
411; parambulacral network of, 123, 124, 
416; radial blood-vessels of, 96; spongy 
organ of, 98, 99 (PI. lix. figs. 6, 7; Pl. Ix. 
figs. 3-6), 
Sluctuans, 280, 
hageni, 36. 
inaequalis, 83 (Pl. liv. fig. 8). 
incerta, 57, 83 (PL. liv. figs. 6, 7). 
lusitanica, 315. 
milleri, 73. 
multiradiata, 84, 85 (Pl. lv. figs. 3, 4). 
phalanyium, 10, 36, 130, 318. 
protecta, 58. 
quadrata, 98, 99. 
rhodanicus, 144. 
rosacea, 49, 50, 52, 58, 67, 70, 86, 88, 93, 
95-98, 100-102, 104, 107-112, 118, 120, 
122, 124, 125, 127, 129, 130, 133, 134, 
280, 304, 404, 411, 413; anal plate of, 73; 
calyx interradials of, 39; genital glands of, 
109; labial plexus of, 98; plexiform gland 
of, 102, 104; spongy organ of, 100 (PI. lvi. 
fig. 6; Pl. lix. fig. 5). 
serobiculata, 336. 
spinifera, 277. 
Antedonin, 129. 
Anthodiata, 186, 190, 191. 
THE VOYAGE OF H.M.S. CHALLENGER. 
| Apical dome plates, 157, 167, 168; of Actinocrinide, 
| 164, 167; of the Blastoidea, 164, 173; of 
Cyathocrinide, 164,172; of Glyptocrinus, 184 ; 
of Ichthyocrinide, 181, 183; of Periechocrinus, 
171, 172; of Platyerinide, 164, 175-178; of 
Rhodocrinidz, 164 ; of Strotocrinus, 171, 172. 
Apical system, 2, 157, 172, 393-402. 
Apiocrinide, 32, 48, 54, 142, 183 
| 286, 
Apiocrinites, 245, 
Aptocrinus, 8, 11, 25, 42, 49, 53, 68, 76, 125, 126, 
135, 145-147, 150, 153, 154, 181, 183, 
211, 223, 230, 249, 256, 270, 276, 289, 
293, 340. 
constrictus, 24, 257. 
cornutus, 258. 
crassus, 256. 
, 222, 225, 247, 
insiynis, 9. 
magnificus, 256. 
martini, 39. 
milleri, 215. 
murchisonianus, 256. 
parkinsoni, 9, 131, 150. 
rotssyanus, 39, 149, 150, 183, 215. 
Arm-groove, 64, 65, 77-83. 
Arms, 47-56, 154, 194; of Actinometra, 55-57, 60, 69, 
70; of Bathycrinus, 232, 233, 236; of Crinoids 
and Cystids compared, 189 ; of Eztracrinus, 59— 
61, 224 278 ; of Holopus, 207-209 ; of 
HHyocrinus, 52, 53, 219, 224; of Pentacrinide, 
55, 56, 154, 155, 277, 278, 284-287 ; of Rhizo- 
crinus, 52-54, 64, 65, 267. 
Article basal of Apiocrinus and Bourgueticrinus, 3, 
25, 153, 257. 
Articulata, 145, 182, 195, 196. 
Articulation, bifascial, 8, 53, 231, 280, 304, 326, 
329, 330; muscular, 9-11, 146, 194; trifascial, 
8, 9, 53, 231-233. 
Asterencrinidea, 187. 
Asterias, 245, 395, 396, 399, 400. 
Astrocrinide, 194. 
Astrocrinus, 132. 
Atelecrinus, 34, 36, 56, 58, 68, 127, 137, 138, 140, 
141, 144, 291, 292, 294, 371. 
balanoides, 376, 380. 
cubensis, 379. 
Sills 
‘ 
Axial cords of rays and arms, 31, 114-127, 146, 407— 
416; of Bathycrinus, 31, 119, 236; of Holo- 
pus, 119, 209, 236; of Pentacrinus, 124, 126, 
293, 294; of Rh*zocrinus, 119, 126, 252, 253. 
