REPORT ON THE CRINOIDEA. 
Phyllocrinus, 142, 216, 227, 413. 
Physetocrinus, summit of, 17 il 
Pigment, 23, 97. 
Picteticrinus, 273, 281. 
Pinnastella, 187. 
Pinnigrada, 187, 190. 
Pinnules, 55-66, 174; of Bathycrinus, 233, 234; of 
Comatule, 58, 59, 83; of Holopus, 207, 208 ; 
of Hyocrinus, 59-61, 219, 224; of Metacrinus, 
10, 55, 58, 155, 341, 342; of Pentacrinus, 55, 
58, 59, 155, 286; of Rhizocrinus, 56, 60, 255. 
Pisocrinus, 48, 54. 
Platyerinide, 61, 62, 149, 158, 160, 162, 
170, 171, 175, 176, 178-181. 
Platycrinus, 24, 48, 62, 65, 146, 151, 155, 
174, 176-179, 185, 196, 217, 
258, 394. 
burlingtonensis, 177. 
ventricosus, 170. 
Pleurocystites, 20. 
Plexiform gland, 33, 34, 96-106, 108 ; 
103, 104; of Antedon, 101, 102, 235; of 
Bathycrinus, 89, 90, 101, 235; of Echinozoa, 
101, 105, 407 ; of Pentacrinus, 105; of Rhizo- 
crinus, 89, 101, 104. 
Plicatocrinide, 142, 222. 
Plicatocrinus, 49, 51, 142, 
223, 289. 
Poteriocrinus, 46, 60, 61, 146, 224, 394. 
radiatus, 152. 
Primary interradial cords, of Bathycrinus, 126, 228— 
230; of Enerinus, 125, 126; of Pentacrinus, 
124-126, 228, 230, 292, 293; of Rhizocrinus, 
126, 228-230, 252, 253. 
Proboscis, 41—44, 87. 
Promachocrinus, 36-38, 68, 90, 92, 97, 137, 138, 140, 
144, 216, 403. 
abyssorum, 376, 377. 
kerguelensis, 98, 99, 101, 102, 
naresi, 378. 
Proximal plates of vault, 168-172. 
Psolide (orals of), 2 
Pterocrinus, 242, 243. 
Pterotocrinus, 157, 177. 
Radials (first), 2, 3, 33-38, 48, 106, 152, 155, 157, 
168-170, 393-395, 399, 402; of Bathycrinus, 
3, 37, 230, 231; of Comatule, 147, 289, 293, 
294; of Metacrinus, 48-51, 341, 357; of 
Pentacrinus, 289, 293,294; of Promachocrinus, 
37, 38; of Rhizocrinus, 250-253. 
163, 164, 
223, 237, 
152, 155, 205, 214, 222 
’ 
127 
167, 168, | 
| 
of Actinometra, 
439 
| Radials (second), 38, 47, 50; of Hudesicrinus, 10,215 ; of 
Holopus, 204-206, 215; of Metacrinus, 48, 341. 
Radial dome plates, 167, 169, 175-178. 
| Radial plug, 34, ae 
| Radial skeleton, 1, 
| Radial spaces, 31, 532. 
Radicular cirri, 27, 28. 
Ray-divisions, 47-51, 337. 
| Reparation of arms, 60, 255, 285; of disk, 
Reteocrinus, 42, 151, 181, 183-185, 371, 3 
nealli, 43, 44, 184. 
richardsont, 43. 
stellaris, 43. 
subglobosus, 43. 
thizocrinus, 3, 24, 27-31, 38, 54, 64, 73, 109, 127, 
130, 132, 142, 143, 151, 153, 213, 217, 
222-226, 229-238, 244, 245, 246, 
247-259, 268, 269, 289-292, 317, 
371, 388, 391, 392; ambulacral plates 
of, 62, 261; arms of, 52-54, 64, 65, 
267; calyx of, 33, 34, 36, 38, 248-253, 
257; digestive tube of, 88-90, 254; 
geographical and bathymetrical range 
of, 136-141, 391, 392; intra-radial 
commissure of, 126, 253; orals of, 
70, 72, 156, 219, 255; parasites of, 
134; pinnules of, 56, 60, 255; plexi- 
form gland of, 89, 101, 104; primary 
interradial cords of, 156, 228-230, 252, 
253; reparation of disk in, 255; second 
brachials of, 38, 254; stem of, 23-31, 
107, 256; syzygies of, 5, 9, 254, 255; 
visceral mass of, 33, 90, 254, 255. 
lofotensis, 3, 25-28, 36, 47, 56, 72, 90, 
93, 134, 136, 246, 248-251, 253, 254, 
257, 259, 260, 261-266, 268, 374- 
376, 378-380, 382, 384, 386, 388, 389, 
391 (Pl. viiia. figs. 6 85 PlSixe figs 2 
Pe excartioes sya): 
londinensis, 269. 
rawsoni, 25, 28-30, 47, 56, 72, 134, 249, 
254, 255, 257, 258, 262, 263-269, 
374-376, 379-384, 386, 388, 389, 391 
(PI ix. figs. 3-5; Pl x figs. 3=20); 
Pl. liii. figs. 7, 8). 
calyx of, 265-267; pinnules of, 
young specimens of, 264, 265. 
Rhodocrinidw, 39, 40, 149, 164, 167, 168, 171, 174, 
371. 
2505. 
72. 
15 
267 ; 
Rhodocrinites, 39, 40, 371. 
