| 
| 
| 
/ 
| 
‘ 
; 
| 
| 
| 
GENERAL INDEX. 833 
Platycrinus Pratteni, 668, 671. (Pl. LXX, 
figs. 11, 12.) 
—— pulchellus, 651, 713. 
pumilus, 650. 
punctobrachiatus, 750. 
—— quinquenodus, 661. (Pl. LXXI, figs. 
14a-c.) 
ramulosus, 651, 735, 737. 
—— regalis, 710,712. (Pl. LX XII, figs. 1, 2.) 
retiarius, 735. 
richfieldensis, 651, 672. 
rotundus, 651, 691. 
-—— Saffordi, 694. (Pl. LXVII, figs. 1-3.) 
—— Sampsoni, 673. (Pl. LXX, fig. 10.) 
Saree, 84, 677, 682. (Pl. LXIX, fig. 7; 
LXX, fig. 1.) 
—— scobina, 695, 697. (Pl LXVIII, figs. 
14a, b.) 
sculptus, 691, 693, 695. (Pl LXVIII, 
fig. 5; LXXV, figs. 8, 9.) 
shumardianus, 651, 7138. 
— spinifer, 708. (Pl. LXVI, fig. 7.) 
var. elongatus, 709. (Pl. LXVII, 
fig. 7.) 
striobrachiatus, 651, 713. 
— subspinosus, 717. (Pl. LXVI, figs. 9a, b.) 
subspinulosus, 684, 685, 754. (Pl. LXVI, 
figs. 2a, b; LXX, fig. 9.) 
sulcatus, 651, 718. 
symmetricus, 103, 118, 655. (Pl. III, 
fig. 16; LXIX, figs. la—c.) 
tennesseensis, 651, 731. 
tentaculatus, 651, 735. 
tenuibrachiatus, 687, 699. (Pl. LXX, 
figs. 7, 8.) 
truncatulus, 647,675. (Pl. LXVII, figs. 
lla, b; LXXI, figs. 18a, b.) 
—— truncatus, 651, 686. 
——— tuberosus, 651, 720, 728. 
—— verrucosus, 705, 706, 709. (Pl. LXVI, 
figs. 8a, b; LXVIII, figs. la-d.) 
vexabilis, 650. 
—— Wortheni, 702. (Pl. LXVII, fig. 9.) 
Yandelli, 103, 706, 708. (Pl. LXVI, 
figs. 6a-c; LXVIII, figs. 3a—c.) 
var. perasper, 708. (Pl. LXVIII, 
figs. 4a, b.) 
undescribed species from England, 644. 
Pleurocrinus, 647, 649. 
Plicatocrinide, 30. 
Polyerinides, 18. 
Polymera, 31. 
Polypeltes, 365. 
Pores in Poteriocrinide, 114,116. (Pl. VI, 
figs. 4, 7, 8, 9.) 
Porocrinus, 67, 146. 
Position for figuring, 37. 
Postpalmars, 34, 73, 76. 
Poteriocrinide, 58, 87, 116, 155, 161. 
Poteriocrinus, 13, 87, 127, 159. 
—- missouriensis, 78. 
Pradocrinus, 519, 521. 
amplus, 580. 
Primary brachials, 34. 
Primary plates, 38. 
Proximal, 37. 
Proximal plates (proximals), 90, 95. 
Proximal ring of base, 54. 
Pseudomonocyclica, 59. 
Pterotocrinus, 77, 79, 83, 112, 741, 781, 791. 
(Pl. LX XIX, fig. 10.) 
— acutus, 799. (Pl. LXXIX, figs. 3a-g.) 
var. bifurcatus, 801. (Pl. LXXIX, 
figs. 9a, b.) 
- capitalis, 793, 794, 799. (Pl. LXXIX, 
figs. 6a, b.) 
chesterensis, 802. (Pl. LXXIX, figs. 
5a, b.) 
cornigerus, 783. 
—— coronarius, 795. (Pl. LXXIX, figs. 
7a, b.) 
—— crassus, 801. (Pl. LXXIX, fig. 8.) 
—— depressus, 796. (Pl. LX XIX, figs. 2a-c.) 
—— pyramidalis, 798. (Pl. LXXIX, figs. 4a, 
b.) 
rugosus, 799, 801. 
sexlobatus, 784. 
spatulatus, 799. 
Ptychocrinus, 188, 197. 
angularis, 199. 
—— parvus, 177, 199. (Pl. XVIII, figs. 1a, 
Dseze) 
priscus, 198. 
splendens, 198. (Pl. XVIII, figs. 3a, b.) 
Pycnocrinidées, 17. 
Pyenocrinus, 175, 268, 273. 
Shaffert, 272. 
Pyxidocrinus, 519, 521. 
Quinquelocular or Dorsal organ, 45. 
Radials (Radialia), 15, 33, 68. 
compound, 71, 158. 
limits of, 67. 
105 
— 
ee 
