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830 GENERAL INDEX. 
Megistocrinus spinosulus, 544. (Pl. XLVIII, | Mouth, 21, 35, 99. 
figs. la-2.) 
—— Whitet, 530. 
Melocrinide, 124, 163, 170, 264. 
Melocrinites, 264, 267. 
Melocrinus, 76, 78, 86, 135, 264, 282, 292. 
—— equalis, 304. 
amphora, 587. 
bainbridgensis, 297. (Pl. XXII, figs. 
4a-c; XXIV, fig. 5.) 
brevidactylus, 294. 
— Calvini, 300. (Pl. XXII, fig. 6.) 
—— Clarkei, 297. 
— gracilis, 298. (Pl. XXII, fig. 5.) 
—— hieroglyphicus, 293. 
— levis (Goldf.), 301. 
— levis (Roemer), 302. 
—— nobilissimus, 295. (Pl. XXIII, figs. 1, 
2, 3.) 
nodosus, 294. 
—— obconicus, 302. (Pl. XXII, figs. 10a-c.) 
— oblongus, 300, 302. (Pl. XXII, figs. 9, 
12.) 
-— obpyramidalis, 294. 
—— pachydactylus, 296. (Pl. XXIII, figs. 
4,5; XXIV, figs. 4a, b.) 
—— parvus, 303. (Pl. XXII, fig. 8.) 
paucidactylus, 296. 
Prattent, 294. 
—— Remeri, 301. (Pl. XXII, figs. 11a, b.) 
sculptus, 294. 
—— Tiffanyi, 299. (Pl. XXII, figs. 11a, b.) 
—— Vernewili (Hall), 294. 
Verneuili ( Gthlert), 294. 
Merocrinus, 68, 71, 127. 
Mespilocrinus, 41, 77. 
Metacrinus, 49, 65, 67, 70. 
— angulatus, 65. (Pl. VI, fig. 9.) 
Millericrinus, 39, 53, 60, 65, 69. 
—— Carabefi. (Pl. VI, fig. 5.) 
——icaunensis. (Pl. VI, fig. 3.) 
—— Milleri. Pl. VI, figs. 4a, b.) 
—— munsterensis. (Pl. VI, fig. 6.) 
—— Orbignyi, 61. (Pl. VI, figs. La, b.) 
—— polydactylus, 61. (PI. VI, figs. 2a, b.) 
Modifications, paleontological, 61, 98. 
Monocycelic, 33. 
Monocyclic Crinoids, 54, 60, 165. 
derivation of, 67. 
Monocyclica, 58, 157. 
Morphological part, 38. 
and Anus, 21. 
discovery of in Taxocrinus, 93. 
Mycocrinus, 142. 
Myelodactylus, 779. 
Myrtillocrinus, 141, 158, 172. 
americanus. (Pl. III, fig. 13.) =“ 
Myzostoma cysts, 48, 502. ; 
Nanocrinus, 159. 
Nave Encrinite, 647. 
Neocrinoidea, 68, 144, 148. | 
Nodal joints, 33, 39. | | 
Ohiocrinus, 41, 71, 158. 
Ollacrinus, 236. 
Jiscellus, 245. 
obovatus, 241. 
reticulatus, 244. 
—— spinigerus, 247. 
tenuiradiatus, 246. 
tuberculosus, 248. 
tuberosus, 239. 
—— typus, 242. 
Oncocrinus, 132, 160, 162. 
Onychaster attached to Crinoids, 566. 
Onychocrinus, 43, 77, 138. (Pl. VI, fig. 17.) 
infrabasals coalesced with top stem joint. 
(PE Vbetig. i.) 
—— diversus, 123. 
Ulrichi, 123. (Pl. VI, fig. 20.) 
Orals, 26, 30, 36, 88, 155. (Pl. III, figs. 
2-25.) 
of Antedon larva, 89, 99. 
of Cyathocrinus, 95. 
-—— of Camerata, 89. 
of Haplocrinus, 91. 
—— of Larviformia, 89, 92, 98. 
of Taxocrinus, 93. 
Orientation, 37, 57, 153, 364. 
of the axial canals, 60, 64. 
— of the basals, 56, 153. 
of the cirri, 48, 60. 
— of the radii, 37. 
of the stem, 45, 60, 68. (PI. VI, figs. 
1-12, 18.) 
Ornigranulus group, 701. 
Orocentral, 90. 
Orophocrinus, 20. 
Ottawacrinus, 68. 
Outer face, 158. 
Ovarian tube, 36. 
Paleocrinotdea, 25, 144, 148. 
