4SS 



ROBERT TRACY JACKSON ON ECHINI. 



Ranzani, Camillo, 27, 28. 



rarispinus, Hyattechinus, 12, 17, 21, 22, 25, 32, 50, 66, 77, 

 210, 225, 237, 251, 290, 292, 296, 297, 298, 395, 396. 

 rarispinus, Lepidechinus, 290, 292, 394, 395, 396, 400. 



Lepidocenlrus, 292. 

 reevesii, Temnopleurus, 117, 159. 

 regimontana, Archaeocidaris, 277, 279. 

 regnyi, Palaeechinus, 305, 461. 

 rhenanus, Lepidocentrus, 236, 287, 288, 298. 

 rhenanus, Palaechinus, 288. 



Palaeocidaris, 288, 455. 

 Rhoechinidae, 284, 393. 

 Rhoechinus, 303, 304, 305, 312, 394, 395, 396, 454. 



burlingtonensis, 313, 323. 



elegans, 303, 308, 314. 



grac.ilis, 323. 



irregularis, 303, 394, 396. 



quadrangularis, 305. 



quadriserialis, 303, 305. 



sp., 303, 305, 464. 



Ribaucourt, Edouard de, 35, 48, 50. 

 Ritchie, James, and Mclntosh, D. C., 35, 44. 

 robillardi, Gymnechinus, 93, 94, 120, 160, 164, 165, 166. 

 robineti, Palaechinus, 305, 462. 

 rodgersi, Centrostephanus, 108, 110, 152, 153, 156. 

 rosaceus, Antedon, 52. 



Clypeaster, 73, 185, 196, 197. 

 rossica, Archaeocidaris, 77, 82, 177, 184, 224, 255, 256, 



258, 263, 456. 

 rossica, Cidarotropus, 263. 



Echinocrinus, 263. 



Eocidaris, 263. 



Palaeocidaris, 263. 



var. schellwieni, Archaeocidaris, 263, 264. 

 rossicus, Archaeocidaris, 263. 



Cidaris, 263. 



Cidarites, 263. 



Eocidaris, 263. 

 rotata, Pedina, 155. 

 Rotula, 71. 



dentata, 70. 

 rutoli, Palaechinus, 396. 



Palechinus, 396. 



SafTord, J. M., 372. 



Salenia, 65, 69, 71, 85, 89, 111, 112, 172, 174, 175, 176, 183, 

 186, 187, 194, 195, 214. 



cincta, 112, 157. 



clarki, 111. 



pattersoni, 88, 111, 157, 170, 171, 172. 



petalifera, 111, 157. 



scutigera, 111, 157. 

 Saleniidae, 78, 87, 92, 93, 111, 112, 113, 156, 157, 174, 176, 



195, 203, 209, 214, 216, 220. 

 Salenocidaris, 174. 



miliaris, 34, 56, 112, 157. 



profundi, 111, 112, 157. 



varispina, 111, 112, 151, 153, 157. 

 Salmacis alexandri, 159. 



Salmacis (continued). 



bicolor, 159. 



sphaeroides, 159. 

 Salter, J. W., 251. 

 sampsoni, Discocystis, 468. 

 sampsoni, Echinodiscus, 458. 

 Sarasin, Paul and Fritz, 62, 179. 

 sceptifera, Cidaris, 95. 

 (Schizaster) fragilis, 177. 

 Schmidt, Friedrich, 10, 87, 242, 243, 244. 

 Schultze, Ludwig, 290. 

 Schumacher, C. F., 27. 

 scotica, Archaeocidaris, 258, 447. 

 scrobiculata, Cidaris, 255. 



Eocidaris, 255. 



scutata, Habrocidaris, 172, 175. 

 scutigera, Salenia, 111, 157. 

 selwyni, Archaeocidaris, 238, 258, 447. 

 semituberculatus, Toxopneustes, 121, 161. 

 septenarius, Melonechinus, 364, 373. 

 septenarius, Melonites, 373. 

 septies, Lovenechinus, 23, 50, 59, 67, 68, 73, 228, 304, 



307, 326, 335, 348, 351, 439. 

 setosum, Diadema, 28, 104. 

 setosus, Centrechinus, 28, 76, 104-109, 110, 152, 153, 155, 



164, 167, 168, 170, 183, 185, 191, 192, 213. 

 sexiesperforatus, Mellita, 18. 

 Shumard, B. F., and Swallow, G. C., 273, 274. 

 shumardana, Archaeocidaris, 258, 268. 

 shumardanus, Archaeocidaris, 268. 

 ghumardi, Archaeocidaris, 268. 

 shumardiana, Archaeocidaris, 268. 

 shumardina, Archaeocidaris, 268. 

 sigsbei, Conolampas, 198. 

 silurica, Koninckocidaris, 225, 236, 284, 286, 287, 289, 



414. 



sixi, Archaeocidaris, 258, 447. 

 skiptoni, Palaeospatangus, 453. 

 Smith, John, 457. 

 Solaster, 35. 



Sollas, W. J., 177, 211, 222, 251, 252, 253, 295, 407, 409. 

 soreili, Oligoporus, 233, 410. 

 sp., Archaeocidaris, 269, 272, 281, 408, 447, 448, 449. 



Echinocrinus, 450. 



Palaechinus, 305, 326, 468. 



Palechinus, 462. 



Pholidocidaris, 440. 



Rhoechinus, 303, 305, 464. 

 sp., Oligoporus, 355. 

 sp. a., Archaeocidaris, 272. 

 sp. b., Archaeocidaris, 237, 259, 281. 

 sp. b. var., Archaeocidaris, 281, 282. 

 sp. c., Archaeocidaris, 281, 282. 

 sp. d., Archaeocidaris, 281, 282. 

 Spatangina, 78, 92, 189, 198, 204, 209, 219. 

 Spatangoids, 18, 26, 29, 33, 45, 56, 57, 58, 60, 62, 64, 65, 69, 

 71, 72, 78, 79, 85, 86, 87, 92, 167, 170, 190, 200, 

 210, 217, 218, 241. 

 Spatangopsis, 468. 



