482 



GENERAL INDEX 



ramulosus, 418, 433. (PI. LXXII, figs. 1-12) 



scmiovatus, 436. (PI. LXXIII, fig. 7). 



sp„ 420. (PI. LXIV, figs. 150, b). 



ulrichi, 425. (Text-fig. 8 ; Pis. XXI, fig. 5 ; 



LXVI, figs. 1-10; LXVII, figs. 1-10; LXVIII, 



figs. 1-6). 



whitfieldi, 408, 409. 



wrighti, 438. (PI. LXXV, fig. 14). 



Ordovician, 8. 



Orals (O), 22, 48. 335- 



asymmetrical, 22. 



madreporite, 22, 335, 429. 



symmetrical, 22. 



unequal in Flexibilia, 49, 390, 428. 



in Holopus, 49. (PI. A, fig. 8). 



Hyocrinus, 49. 



Onychocrinus, 49, 427. (PI. LXVII, figs. 7, 



90). 



Ptilocrinus, 49. (PI. LXXV, fig. ic). 



Synerocrinus, 335. (PI. XLII, figs. 8n, 0). 



Taxocrinus, 390, 428. (PI. LIII, fig. 16). 



Orientation, 23. 



of axial canal, 34, 241, 269, 277, 339. 



of intranasals, 31, 240, 256, 260. 



Oriskany formation, 9. 

 Ornamentation, 27, 271, 351, 401. 



of column, 400, 401. 



Osgood formation, 8. 



Ottawa, Museum, 7. 



Ovarian vessels, 22. 



Owen and Shumard's types, 7, 10. 



Pacht, Raimund, 305, 311, 378. 

 Parallel modifications, 379. 



Parichthyocrinus, 25, 41, 42, 267, 3M, 339, 343. 410- 

 411. (Text-fig. 50). 



thickness of plates, 411. 



the species of, 411. 



crawfordsvillensis, 416. (PI. LXIII, figs. 



5,6). 



meeki, 414. (PI. LXII, figs. 1-3). 



nobilis, 412. (PI. LXI, figs, ia-16). 



subovatus, 415. (Pis. XXI, fig. 6; LXII, figs. 



4-17; LXIII, figs. 1-4). 

 Palmars, 21. 

 Paris, Museum d'Histoire Naturelle, 3, 226. Expl. 



PI. XXII, fig. 3. 

 Parkinson, J., 24, 265, 274. 

 Parks, W. A., 7. 

 Pate, W. F., 8, 9, 14. 

 "Patelloid plates," 44, 45, "2, 239, 242, 252, 271, 



402, 407. (Text-figs. 6a-d; 7a-d). 

 Pavlow, A. P., 336. 

 Pear-encrinite, 265. 

 Pentacrinidae, 40, 117. 

 " Pentacrinoids," 70, 79. 

 Pentacrinus, 40, 46. 



caput medusae, 101. 



■ miilleri, 40. 



tuberculatus, 273, 274. 



Pentremites, basals in, 38: 

 Perforation of brachials, 37. 

 Perisome, 22, 50, 51, 62, 114, 230, 429. 

 in Nipterocrinus, 202. 



in Pycnosaccus, 181. 



■ in Taxocrinus, 374. 



Perner, J., 442. 



Persistent proximale, 20, 23, 29, 30, 119, 232, 240. 



Phillips, John, 108, 210, 217, 266, 274, 315, 377, 378, 



.384. 

 Phrynocrinus, 42, 64. 



Phylogeny of the Flexibilia, researches on, 79. 

 Phylogenetic relations, 88-92, 107. 



Pinnules and Pinnulars, 20. 



none in Flexibilia, 20, 47, 420. 



Piret, Ad., 11. 



Platycrinidae, 38, 305. 

 Platycrinus, basals in, 38, 448. 



hemisphericus, 399. 



Plicatocrinidae, 49, 107. 

 Portage, 10, 369. 



Posterior basal, 40, 41, 114, 191, 235-237, 262, 401. 

 (Text-figs. 27, 28a-c). 



oral, 335, 390, 428. 



Poteriocrinidae, 42. 

 Poteriocrinites nobilis, 394. 

 Poteriocrinus, 57, 108, 190, 193, 304. 



(young), 190, 193. 



brachialis irregularis, 172. 



egertoni, 108, 377, 384, 394. Expl. PI. LXIV, 



fig. 14. 



granulosus (granulatus), 319. 



nobilis, 108, 305, 384, 394. 



phillipsianus, 319. 



pisiformis, 135, 136. 



Primary brachials, 41, 42. 



modification by anals, 413. 



Primary divisions of the Crinoidea, 105. 

 Primary plates, 25, 27-51, 74. 

 Primibrachs (IBr), 19, 21, 41, 42, 89, 181, 233. 

 number 41, 186, 377, 378, 380, 384, 390, 396, 



401, 409, 418, 431, 434. 

 variations in Asaphocrinus, 179. 



in Lecanocrinus, 126, 142. 



in Parichthyocrinus, 413. 



in Pycnosaccus, 181. 



Progucttardicrinus, 92, 225, 259. 

 grecnei, 258. 



Promachocrinus, 30, 39, 48, 52, 53, 54, 63, 64, 71. 



kerguelensis, larval stage, 84. (PI. A, figs. 



10-15). 



Protaxocrinus, 53, 57, 58, 64, 67, 86, 88, 89, 90, 91, 

 233, 345, 379- (Text-fig. 46). 



radianal primitive, 58, 345. 



the species of, 346. 



elegans, 346. (PI. XLV, fig. 1). 



girardeau, 349. (PI. XLV, fig. 8). 



interbrachiatus, 350. (PI. XLV, figs. 130-16). 



laevis, 348. (PI. XLV, figs. 2-7). 



ovalis, 351. (PL XLVI, figs. 80-11). 



robustus, 349. (PL XLV, figs. 90-11). 



salteri, 352. (PI. XLVI, figs. 10-7). 



virginiensis, 350. (PL XLV, fig. 12). 



Proximal, 23. 



Proximale, 20, 23, 29, 30, 3r, 240. 

 Pseudomonocyclic, 277. 

 Ptilocrinus, 49, 53. 54, 64, 83, 118. 

 pinnatus. (PI. LXXV, figs. la-c). 



