4 8 4 



GENERAL INDEX 



Slocom, A. W., 18. 



Specialization, 145. 



Specific characters, 129, 238, 327, 419 (see Varia- 

 tions). 



Springer, Frank, 8, 10, II, 19, 32, 39, 42, 50, 56, 60, 

 79, 88, 91, no, 242, 268, 295, 315, 326, 427, 442. 



Stanton, T. W., 18. 



Steganocrinus pentagonus, 35, 37, 39. (Text-fig. 5). 



Steinmann, G., 92. 



Stem (see Column). 



Stephanocrinus angulatus, 35, 37, 38, 39. (Text- 

 fig. 4). 



Sternberg, Charles, 18. 



St. Louis Academy of Science, 7. 



St. Louis group, 11, 12. 



Sturtz, B., 18. 



Summit, 20. 



Superradials, 21. 



Supplementary plates, 25, 52-59, 74. 



Sutures ; close, loose, 23. 



Sutures, arcuate or straight, 43, 239, 271, 290. 



arcuate only at exterior, 290, 407. 



sinuous or wavy, 26. 



Sycocrinus, 51, 454. 



Synaptocrinus, 72, 301. (Text-fig. 39). 



uuntius, 302, 312, 326. (PI. XXXVIII, figs. 



30-6). 



Synbathocrinus, 453. 



Synerocrinus, 37, 42, 49, 114, 116, 305, 334-335, 438. 

 (Text-fig. 44). 



madreporite, 335. 



orals in, 49, 335. 



occurrence in Scotland, 336. 



incurvus, 335. (Expl. Pis. XXIV, figs. 26a-c; 



XLII, figs. 1-9; LXXV, figs. 12, 13). 



Synonymic list, 467-471. 

 Syzygy, 23. 



Tables of Distribution, 93, 94, 99, 123, 205, 263, 344. 



Talbot, Mignon, 444. 



Taxocrinidae, 40, 93, 94, 120, 121, 237, 342-343. 



analysis of the genera, 342. 



Distribution, 344. 



Taxocrinoidea, 114, 120, 342. 



Taxocrinus, 24, 28, 32, 34, 40, 42, 44, 52, 55, 57, 65, 

 66, 86, 114, 115, 120, 207, 230, 235, 236, 237, 243, 

 306, 345, 373-383- (Text-figs. 28a-c; 32-34, 49). 



anal tube, 374. 



diagnosis by W. and Sp., 379. 



interbrachial structures, 237, 238, 375, 376, 402, 



420. 



nomenclature, 226, 241, 376. 



plan, 64. 



posterior basal, 235-237, 401, 402. 



posterior rays, 401. 



relation to Forbesiocrinus, 235-237, 378. 



(PI. XXI). 



species referred to other genera, 382. 



synonyms or imperfectly known, 383. 



tegmen, 375, 390, 406, 428. 



thickness of calyx wall, 239. 



■ type species, 378. 



■ the species of, 381. 



■ affinis, 351, 362. 



austini, 352. (PI. XLVI, figs. 6a-d). 



belgicus, 395. (PI. LIV, figs. 2a, b). 



beyrichi, 311. 



(PI. LIX, figs, 170-1? 



(PI. LIII, figs. 



brevidactylus, 383. 



briareus, 383. 



colletti, 239, 398. (Text-figs. 32-34; Pis. LV, 



fig. 11; XXI, fig. 4; LVI, figs, i-nr; LVII, figs, 

 i-ioc). 



communis, 387. (PI. LII, figs. 1-4). 



concavus, 309. 



crawfordsvillensis, 416. 



■ curtus, 369. 



distensus, 352. (PI. XLVI, figs. 30, 6). 



egertoni, 377, 378, 439. 



■ elegans, 346. 



■ excavatus, 308. 



■ e.vpansus, 353, 354. 



Aetcheri, 371. 



giddingei, 405. (PI. LIX, figs. 1-12). 



■ gracilis, 367. 



■ granulatus, 383. 



granulosus, 319. 



■ grebei, 383. 



huntsvillae, 407. 



20-25). 



■ incurvus, 335. 



interbrachiatus, 350. 



intermedius, 237, 389, 428. 



10-6). 



the type specimens, 391. 



interscapularis, 385. (PI. LII, fig. 6). 



ithacensis, 367. 



juglandiformis, 363. 



juvenis, 392. (PI. LIV, figs. 3-116). 



kelloggi, 388. (PI. LII, figs. $a-c). 



lacvis, 348. 



lobatus, 366, 386. (PI. LII, figs. 9-116). 



lobatus var., 366, 386. 



longidactylus, 383. 



macrodactylus, 377, 378, 379, 383. (PI. LI, 



figs. 1-46). 



marmoratus, 383. 



meeki, Hall, 398, 399, 414. 



meeki, Zittel, 399, 414. 



multibrachiatus, 398, 399, 400. 



nanus, 383. 



nobilis, 243, 377, 378, 394- (PL LIV, figs. 



la-c). 



norwoodi, 430. 



■ nuntius, 302. 



oblongatus, 359. 



oligoptilus, 310. 



orbignyi, 213. 



ornatus, 393. (PI. LIV, figs. 120-13). 



ovalis, 345, 351. 



pentagonus, 383. 



■ Polydactylies, 439. 



praestans, 404. (PI. LVIII, figs. 1-86). 



p-rlscus, 383. 



punctatus, 353, 354. 



pustulosus, 391. (PI. LIV, figs. 190-20&). 



ramulosus, 395. (PI. LIV, figs. 14-18). 



rhenanus, 360. Expl. PI. XXXVI, fig. 16. 



rigens, 358, 359- (PL XL VIII, figs. 2a, b). 



salteri, 352. 



