GENEB \l. INDEX. 



32] 



Schizoblastus Missouriensis, L89, 234, 

 nsglvstua, I 12, 

 Potteri, I 12, 

 projectus, 142. 



Ro/«, L2, 25, 29,62, 85,92,210,221- 

 223,225,227, 228,231,257 (PI. VI. 

 fig. 17; PI. VHI.figs.9 l 1 ; PI. XVII. 

 fig. 2). 

 Sampsoni, 1 12. 



fifoyt, L2, 25, 35, 39, 54, 64, 67, 68, 75, 

 92, 93,96,99, 104, 1 10, 111, L24, 142, 

 L93, 210, 221-223,224 228, 231 234, 

 (PL III. figs. 1 3; PL VI. Bg. I- : 

 PI. X. fig. 17; PL XVII. fig. 1). 

 Sehlotheim, E. F. von, 157, 160. 

 Schmidt. 1'., 28, 120, 121. 

 Sehultee, L., 6, 169, 174-177, 179, 181. 

 Schulz, D. G„ 283. 

 Scotland, Blastoidea of, 133. 

 Seebach, K., von, 5, 6, 283, 288. 

 Shumard, B. F„ 5, 36, 63, 66-70, 75, 77, 111, 152, 

 157, 158, 161-165, 167, 191-196, 199, 200, 

 206 208, 210, 212, 213, 216-221, 224-226, 

 229, 232, 237 240, 260-262, 264-267, 283, 

 288, 289. 

 Shumard, B. F., and Yandcll, L. P., 5, 207, 294, 295, 



297. 

 Side plates, 43, 56-62, 89-94, 110, 111, 149, 150; 

 of Acentrotremit s, 55, 93 ; of Codaster, 55, 56, 

 61, 262; of Oryptoblastus, 55,56; of Crypto- 

 schisma, 56, 89 ; of Elaacrinus, 56 ; of Granato- 

 crinus, 49, 55, 56, 58, 00-62, 92, 105, 242 : of 

 Mesoblastus, 49, 55, 56, 58, 60-62, 92; of 

 Orophocrinus, 55, 56, 61, 99, 286; of Pentre- 

 mitts, 43, 49, 56 58, 60. 62, 94, 100-1Q3; 

 of Pentremitidea, 55, 56, 58, 62, 104, 170; of 



Phan sehi 55, 56, 60, 89, 272; of Schizo- 



blastus, 56, 58, 62, 223. 

 Silurian Period. Blastoidea of, L29, 136, 137. 

 Sowerby, (i. B, 2, 101, 157, 185-188, 238, 248 250, 



253, 255, 276, 277, 290, 292, 293. 

 Spain, Blastoidea of, 130, 131, 136, 1 10. 

 Sphseroidocrinidae, 71. 



Spiracles, 6, 7. 29, 32, 58, 59, 66, 69- 71. 76-81, 84- 

 91, 96-112, L23, 124, 149. L52; of Acentro- 

 tremites, LOO, L05, L08-111, 234; of Crypto- 

 blastus, LOO, L05, L06, L08 111, 231 j of 

 Oryptoschisma, *•'■>. 96, 'h ; of Elaacrinus, 

 108, 11' i. Ill; of Qranatocrinus, 40, 105- 

 107, 123, 237, 241, i'46; of Hettrobhxtus, L07, 

 237, 255; of Mesoblastus, 100, 104, 183; of 



Metablastus, 108, I 1" ; of Oraphoa - I 



•.'7 LOO, 1 1". 284, 285; of Pentrmita, 41, 69 

 71, '.'7. 1"" I"::, I"-".. 151 ; of Pmtremitidea, 

 L00, I'M; of JPAa»iw«eAwma,89 > 96,97,272; of 

 Schizoblastus, 108,110,222; of Trioahcrinua, 

 1 I". 206; oi Tro stocrinus, I 1" L12, L94. 

 Steininger, J., L81. 

 Stem, 9, 21. 



Stephanocrinus, 2, 7. 63, 87, 96, L18, 121, 200, 204, 

 J';:;, 265. 

 Ambulacra of, 26, 12 ; anus of, 



of, L6, 17, 20, 22, 118; calyx of, 11, 

 17; deltoids of, 26, 32, 34,35, 7::. 71 ; 

 radials of, 17. 26, 28, 34 : summit- 

 plates of, 37, 66, 69, 7". 72, 71. 

 angulatus, 26, 34, 1 1- | PL XIX. figs. 8- 



12). 

 gemmifmrmis, '■> 1, 118. 

 Studer, T., 83, 84. ' 

 Subradials, 19, 71. 



Summit-plates of Attagecrinus, 72. 74 ; of Blastoidea, 

 8, 37. 63-75 ; of Qryptoblastus, 04, 66 ; of 

 Culicoerinus, 72-74; of Oyathocrinus, 37, 71, 

 74, 75; of Cystidca, 71, 74; of EUeai 

 37. 38, 66-68, 73-75, 215 ; of Qlyptosph 

 74; of Qranatocrinus, 64, 66-70, 75; of 

 Haplocrinus, 72, 74 ; of Orophocrinus, 63, 64, 

 68-70, 74; of Pcntremites, 66-71, 152, 163, 

 164; of Pakeocrinoidea, 71-74: of Plat 

 nus, 37, 38, 65, 72-74; of Schizoblastus, 64, 

 66, 67, 75; of Stephanocrinus, 37, 66, 69, 

 70, 72, 74 ; of Symbaihocrinus, 71, 72. 

 Tentacles, 5, 7, B, 62, 77. 86, 87, 152. 

 Thaumatoorinus, 10. 

 Tiarechinus, 39. 



rinus, 6, 7, 91, 125, 126, 133, 134, 136, 146, 

 17". 175, L90, 191, 192, 197, 200, 

 203-206, 235, 299. 

 Ambulacra of, 25 ; basals of, 16-18, 20, 

 22, 204; deltoids of, 29, 32, 111, 

 205; hydrospires of, -7. 95, 205; 

 radials of, 17. 18, 25, 95, 205; spira- 

 cles of. 110, 206. 

 Meekianus, 126, 144. 204, 206, 208 | PL 



XVI. tigs. L7, 18). 

 obliquatus, Roomer, sp., 123, 1-6. Ill, 

 205, 206, 207 (PL XYII1. figs. 10-14). 

 jvatus, W. & M.. 1 1 1, 204, 208. 

 Woodmani, 111, 126, 143, 1 14. 203 206, 

 209 (PI. XIX. figs. 13-16). 

 Troost, G., 2, 3, 56,60, 76,100, Ml. 125, L52 L57 



2t 



