828 



GENERAL INDEX. 



Habrocrinus ornatus, 118, 120. 

 Hadrocvinus, 77, 265, 267, 327. 



■ discus, 328. (PI. XXIV, fig. 1.) 



pentagonus, 327. 



plenissimus, 328. (PI. XXIV, figs. 



2a, b.) 

 Haplocrinacea, 29. 

 Haplocriniis, 29, 72, 89, 91, 95, 97, 137, 



172. 

 mespilirormis, 89, 92. (PI. in, figs. 



12a, b.) 

 Hemisphericus group, 703. 

 Herpetocrinus, 44, 158. 

 Heterocrinidae, 82, 172. 

 Heterocrinns, 41, 67, 71, 82, 129, 157, 779. 



bellevillensis, 131. 



Hexacriuidce, 83, 106, 163, 165, 170, 645, 



741, 742, 803. 

 Hexacrinites, see Hexacrinida. 

 Hexacrintis, 79, 647, 741, 744, 747. 



Leai, 746. (PI. LXXVIII, figs. 12a, b.) 



melo, 745. 



occidentalis, 745. (PI. LXXVIII, fig. 10.) 



Hexagonal base, 165, 363. 

 Historical, 11. 

 Holupus, 14, 94, 142. 

 Homocrinus, 45, 78, 131, 159, 161. 



scoparius, 45. 



Hoplocrinus, 71. 



Hybocrinidae, 57, 82, 116, 147, 162, 172. 



Hyboorinus, 67, 71, 129, 133, 162. 



Hybocystis, 71, 146. 



Hydreionocrinus, 80. 



Hyocrinus, 58, 78, 94, 99, 118. 



betbellianus. (PI. III. fig. 10.) 



Hypanthocrinus, 332, 335. 



decorus, 336. 



ffi/pascocrinoidea , 29, 148. 

 Hyptiocrinus, 188, 200. 



. typus, 201. (PI. XIX, figs. 6a-c.) 



Hypozygal joints, 34, 81. 

 Hystricrinus, 747. 



Carpenteri, 750. 



Ichthyocrinacea, 29. 



Ichthyocrinidse, 40, 58, 64, 87, 113, 123, 152, 



158, 172. 

 lehthyocrinus, 77, 147, 152. 

 Icosidactylocrinites, 268. 

 Idiocrinus, 188, 202. 

 elongatus, 203, 206. (PI. XVIII, figs. 



8a-o.) 



Idiocrinus immatnrus, 206. (PL XVm, figs. 



lOa-c.) 



tennesseensis, 206. (PI. XVIII, fig. 1 1 . ) 



ventricosus, 203, 205. (PI. Ill, fig. 15 ; 



XVIII, figs. 9a, b.) 

 Impiunata, 152, 169, 172. 

 Inadunata, 26, 33, 35, 147, 150, 156, 169. 

 InarticuJata, 13. 

 Inferradials, 33, 71, 154. 

 Infrabasals, 26, 33, 52, 53, 61. 



anchylosis of, 59. 



of Agassizocrinns, 59. 



of the Apiocrinidfe, 60. 



of Comatul^, 53, 64. 



of Cupressocrinus, 59. 



of Extracrinus, 53, 61. 



of the Fistulata, 58. 



of the Ichthyoorinidje, 58, 64. 



of Millericrinus, 53, 61. 



of Stemmatocrinns, 59. 



Inner floor of tegnien. (PI. V, figs. 13-17.) 



Interambulacrals, 34, 36, 105. 



luteraxillaries, 35. 



Interbrachials, 34, 105. 



Interdistichals, 15, 35, 105. 



Internal cavity, 106, 120, 140. 



Interuodal joints and internodes, 33, 40, 



155. 

 Interpalmars, 15, 35, 105. 

 Interradial plates, 15, 34, 105, 646. 



of Cyathocrinus, 96, 114. 



of the EeteocrinidiE, 106, 110, 174. 



of the Ehodocrinidfe, 106, 217. 



of the Platycrinidae, 646. 



locriims, 68, 71, 78, 126, 130, 133, 158. 

 Lampteroorinns, 175, 188, 207, 211. 



inflahis, 208. 



parvus, 208. 



tennesseensis, 208. (PI. XIII, figs. 10a- 



d.) 

 L.ai'va of Comatulse, infrabasals in, 64. 

 Larviformia, 26, 72, 87, 150, 154, 162, 169. 

 Lecanocrinns Billingsi, 139. 



macropetalus, 139. 



Lepidocentrns eifelianns, 748. 



Liberia, 16. 



lobocrinns, 361, 367, 375, 385, 434. 



aeqnibrachiatus, 375, 440. (PI. XXIX, 



figs. 8a, b ; XLVL figs. 6a, b.) 

 var. asteriscus, 441. (PI. XXIX, 



figs. 9a, b.) 



