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GENERAL INDEX. 835 
Scytalocrinus, 160. 
—— validus, 138. (Pl. VII, 2a, b, 3.) 
nov. sp. (Pl. VII, fig. 7.) 
robustus, 566. 
Secondary brachials, 34. 
Side pieces; see Adambulacral plates, 100. 
Siphonocrinus, 120, 122, 188, 209. 
— armosus, 107, 122, 211. (Pl. XIX, figs. 
3a-C.) 
nobilis, 212. (Pl. XIX, figs. la, b, 
2a-C.) 
pentagonus, 213. (Pl. XIX, figs. 4a, b.) 
Species, recognition of, 155, 
— characters of, 156. 
——- descriptions of, 652. 
Spines, movable, 748, 750. 
Spherocrinus concavus, 482. 
Spheronites, 15. 
Spherotdocrinacea, 29. 
Spheroidocrinide = syn. of Camerata, 25. 
Spyridiocrinus, 365. 
Steganocrinus, 76, 85, 101, 110, 293, 550, 
554, 578, 639, 720. 
araneolus, 160, 581, 723. (PI. LXI, 
figs. 2a, b.) 
—— Benedicti, 567. 
——— concinnus, 582. (Pl. LXI, figs. 5a, b.) 
—— globosus, 585. (Pl. LXI, fig. 6.) 
—— pentagonus, 110, 142, 979, 723. (PI. 
LXI, figs. 3a—4b.) 
sculptus, 78, 86, 160, 293, 583. (PI. 
LXI, figs. laf.) 
Stelidiocrinus, 79, 264, 279. 
—— argutus, 280. (Pl. XXIV, fig 6.) 
—— capitulum, 280. 
—— levis, 280. 
—— ovalis, 280. 
Stem, 32, 38, 155. 
figures of; Pl. I and II; VI, figs. 11, 12. 
erowth of, 39. 
divided longitudinally, 41. 
respiratory function of, 47. 
semi-free, 49, 51. 
with coalesced infrabasals. (Pl. VI, 
Lig Hal) 
of Barycrinus, 45, 
of Cupressocrinus, 45. 
of Megistocrinus, 46. 
of Platycrinus, 42. 
of Rhizocrinus, 63. 
—— of Strotocrinus, 639. 
aan 
LI | | 
Stem joints, 32, 41. 
top joint (centrodorsal), 33, 59, 61, 
64, 
—— top joint (youngest joint), 59, 63,69. 
Stemmatocrinus, 59, 80, 127, 183, 160, 162. 
Stephanocrinus, 146. 
—— angulatus. (Pl. VII, figs. 12, 13.) 
Stereocrinus, 77, 124, 265, 324. 
—— Barrisi, 326. (Pl. XXV, figs. 9a, b.) 
— triangulatus, 325, 326. (Pl. XXV, figs. 
8a, b.) 
var. liratus, 326. 
Stomatocrinoidea, 25, 148. 
Storthingocrinus, 57, 647. 
asper, 690. 
Strotocrinus, 76, 85,110, 551,554, 626, 637, 638. 
- asper, 596. 
asperrimus, 579. 
—— egilops, 628. 
bloomfieldensis, 638. 
clivosus, 630. 
dilatatus, 595. 
ectypus, 611. 
—— erodus, 630. 
—— glyptus, 640. (Pl. LX, figs. la-c; LXV, 
figs. 2a, b.) 
insculptus, 630. 
liratus, 633. 
perumbrosus, 638, 640. 
—— regalis, 39, 638, 640. (PI. IV, fig. 4; 
LXV, figs. la—d. ) 
rudis, 630. 
subumbrosus, 633. 
tenuiradiatus, 634. 
umbrosus, 628. 
Stylida, 17. 
Sub-basals, 66. 
Subradials (sous-radiales), 17, 30. 
Subspinulosus group, 683. 
Subtegminal, 35. 
Subtentacular canal, 86, 100. 
Superimposed plates, 119, 121. 
Super-radials, 33. 
Supplementary plates, 34, 38, 105, 154. 
Suture, 37. 
Symmetry, bilateral, 1384, 148. 
irregular, 146. 
pentamerous, 134, 146, 148, 165. 
¢ 
Symbathocrinus, 57, 87, 91, 136, 157, 172. 
—  Wachsmuthi. (Pl. III, fig. 25; VIII, 
sey (Shy 85) 
