GENERAL INDEX 



479 



Heliotype Co., 16. 

 Henshaw, S., 6, 17. 



Herrick, C. L., on Richfield beds, 247. 

 Hertzer, H., 10, 324. 

 Heterocrinidae, radianal, 56. 

 Heterocrinus juvenis, recuperation, 403. 

 Heterotomous arm structure, 20, 46, 73, 77, 223, 

 304, 360, 418, 419, 423. 



subordinate modification, 305, 419. 



Hexacrinidae, 305. 



Hexacrinus, 77, 447. 



Hisinger, 3. 



Holcroft, C, 2, 17. 



Kolopus, 49, 83, 447. (PI. A, fig. 8). 



Holm, G., 17. 



Homalocrinus and Calpiocrinus, 144-153. 



Homalocrinus, 32, 33, 57, 144. (Text-fig. 13). 



infrabasals, 146, 149, 351. 



radianal in, 149. 



tegmen in, 152. 



the species of, 153. 



■ dudleyensis, 138, 146, 154. 



Hljevalli, 155. (PI. VI, figs. 130-156). 



• parabasalis, 154. (PI. VI, figs, ia-12). 



peculiaris, 159. (PI. VII, figs. 6a-c). 



Homocrinus parvus, on specimen of Asaphocrinus 



ornatus, 177. (PI. IV, fig. 22). 

 Kormocrinus, 28, 37, 57, 166-167. (Text-fig. 16). 



the species of, 167. 



■ anglicus, 168. (PI. XIV, figs. 6-7). 



gotlandicus, 169. (PI. XIV, figs. 8a-d). 



■ tennesseensis, 167. (PI. XIV, figs. ia-S). 



Hovey, E. O., 17. 



Hudson, G. H., 17. 



Hurlet limestone. Scotland, 13, 336, 338, 340, 438. 

 Expl. PI. XLII. 



fauna like the Kaskaskia, 340, 438. 



Hybocystites, rays in, 172, 347. 

 Hydreionocrinus, 438. 



Hyocrinus, 40, 49. 

 Hypalocrinus, infrabasals, 39. 

 Hypocrinus, 454. 



Hypothetical figure for Flexibilia, 60, 81. (PI. A, 

 fig. 7)- 



Ichthyocrinidae, 31, 41, 44, 78, 93, 118, 120, 121, 

 261-263. 



analysis of genera, 261. 



distribution of genera, 263, 270. 



Ichthyocrinus, 25, 27, 32, 34, 35, 40, 41, 44, 55, 56, 



57, 65, 86, 94, 102, 108, in, 117, 118, 264-272, 

 320, 322. (Text-figs, la, b; 11; and 36). 



differentiation of species, 270. 



funnel-shaped vessel, 35, 269. 



infrabasals, atrophy of, 262, 269, 270, 277, 289. 



radianal in, 267, 268. 



the species of, 272. 



■ bacchus, 138. 



bohemicus, 291. (PI. XXXVI, fig. 15). 



burlingtonensis, 322. 



clarkensis, 323. 



■ conoideus, 283. (PI. XXXVI, figs. 80-12&). 



corbis, 285. (PI. XXXVI, figs. 1-7). 



devonicus, 290. (PI. XXXV, figs. I7a-c). 



gotlandicus, 275. (PI. XXXV, figs, ia-16). 



grecnei, 300. 



- intermedius, 282. (PL XXXIV, figs. 110-14). 



- laevis, 275, 277, 322. ( PI. XXXIII, figs. 

 1-13C). 



• magnaradialis, 143. 



nob His, 410, 412. 



phillipsianus, 284. (PL XXXVI, figs. 130- 



i-4<0- 



pyriformis, 24, 273, 276, 279, 284, 296. 



schucherti, 299. 



■ simplex, 130. 



spinosulus, 328. 



(?) sp., 360. (PL XXXVI. Expl. of fig. 16). 



subangularis, 281. (PL XXXIV, figs. 1-10&). 



tiaraeformis, 325. 



Idiocrimis tennesseensis, 167. 

 Illustrations, 15, 16. 

 Illinois State Museum, 7. 

 ■ University of, 7. 



Hyocrinus carpenteri, recuperation of calyx, 403. 



Imbrication of plates, 271, 284, 289. 



Inadunata, 88, 106, 345. 



Indian Creek, Indiana, 12, 13, 14, 415, 416. 



Inferradials, 21. 



Infrabasals (IBB) and Basals (BB), 20, 31-41, 



117. 

 Infrabasals, 20, 29, 31-41, 117-120, 146, 191, 195, 



232, 240, 322. 

 anchylosis, 38, 202. 



atrophy, 31, 113, 119, 120, 262, 269, 277, 289, 



315, 337, 339- 



fusion with columnal, 29, 30, 119, 232, 240. 



among themselves, 37, 39, 89, 113, 202. 



■ inequality, 38. 



modification, 117, 191, 195. (Text-figs. 9-11). 



overgrowth in Homalocrinus and Calpiocrinus, 



32, 146, 149. 



position of small, 31, 240, 256, 260. 



in Amphicrinus, 337, 339. 



Dactylocrinus, 305. 



Forbesiocrinus, 117, 240, 260. 



Ichthyocrinus, 117, 262, 322. 



Lecanocrinus, 117, 126. 



Mespilocrinus, 191, 195. 



Nipterocrinus, 202. 



Recent crinoids, 39. 



Taxocrinus, 379, 395. 



Insertae sedis, 441. 



Interambulacrals (iAmb.), 21, 22, 50. 



Interbrachials (iBr), 19, 21, 52-56, 230, 237, 238, 



309, 340, 375, 402, 413. 



connection with basals, 406, 407. 



function of, 53, 413. Expl. PL LXI. 



growth, 54, 55, 413, 436. 



increase in number with age, 255, 413, 415. 



modifications, 52, 61, 73, 223, 309, 327, 357, 358, 



362, 375, 37.6. 



perisomic integument, 52, 53, 230. 



Interlocking rays, 268, 416, 423, 427. 

 Intermediate types, 106. 

 Internodals, 20. 

 Interradials (iR), 19, 21, 52. 



in Recent crinoids, 51, 53, 54, 73. 



Interradius, 21. 



Interray, 21. 



Interrelationships of Flexibilia, 60-78. 



Intersecundibrachs (illBr), 21. 



