490 



ROBERT TRACY JACKSON ON ECHINI. 



Toxopneustes, 38, 46, 79, 85, 121, 176, 187, 216. 



atlanticus, 35, 36, 41, 44, *,, 121, 122, 141, 151, 153, 



161, 164, 166, 170. 

 maculatus, 121, 161. 

 pileolus, 121, 161. 

 semituberculatus, 121, 161 

 variegatus, 35, 41, 42, 84, 121, 122, 123, 151, 153, 161, 



164, 165, 166, 216. 

 trauscholdi, Cidarotropus, 448. 

 Trautschold, Hermann, 177, 262, 265, 272, 418. 

 trautscholdi, Archaeocidaris, 258, 448. 

 Trelechinus, 401. 



illinoisensis, 406. 



tribuloides, Eucidaris, 35, 45, 54, 58, 61, 62, 70, 75, 81, 82, 

 92, 96, 97, 98, 99, 100, 102, 146, 152, 153, 167, 171, 

 174, 182, 184, 191, 192, 248, 249, 445. 

 trigonarius, Heterocentrotus, 147, 163, 166. 

 Trigonocidaris albida, 159. 

 Trilobita, 71, 286. 



triplex, Archaeocidaris, 237, 258, 274. 

 Tripneustes, 19, 40, 46, 47, 62, 78, 88, 123, 169, 183, 187, 



361. 



depressus, 123, 161. 

 esculentus, 35, 44, 46, 48, 91, 93, 123, 124, 125, 141, 



151, 153, 161, 164, 167, 168, 169. 185, 187. 

 variegatus, 123, 161, 164. 

 Iriserala, Archaeocidaris, 275. 

 triserialis, Archaeocidaris, 258, 276. 

 triserialis, Echinocrinus, 275. 

 triserrata, Archaeocidaris, 237, 258, 275. 

 triserratus, Archaeocidaris, 275. 

 Troost, Gerard, 380, 392, 449. 

 trudifer, Archaeocidaris, 237, 258, 269. 

 trudifera, Archaeocidaris, 270. 

 tubaria, Goniocidaris, 100, 101. 

 tuberculatus, Strongylocentrotus, 128, 162, 164. 

 Typhlechinus, 311, 312, 326. 

 sphaericus, 317, 326. 



urei, Archaeocidaris, 277. 



urii, Archaeocidaris, 82, 256, 257, 259, 276. 



urii, Cidaris, 276, 277. 



Echinocrinus, 277. 

 uva, Cystocidaris, 252. 



Echinocystis, 252. 



Echinocystites, 252. 



Valentin, Gabriel, 177. 



vanbrunti, Echinometra, 146, 147, 151, 153, 163. 



vanderbilti, Melonechinus, 68, 364, 388. 



variegatus, Toxopneustes, 35, 41, 42, 84, 121, 122, 123, 151, 



153, 161, 164, 165, 166, 216. 

 Tripneustes, 123, 161, 164. 

 variolaris, Stomopneustes, 49, 113, 114, 158, 164, 186, 214, 



215. 

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



verneuili, Permocidaris, 246. 

 verneuiliana, Archaeocidaris, 245, 268. 



Cidaris, 245. 



Eocidaris, 246, 247. 



Palaechinus, 245. 

 verneuilianus, Eocidaris, 246. 

 verneuilli, Eocidaris, 246. 

 Verrill, A. E., 40, 79. 

 verruculatus, Echinus, 120. 

 vetusta, Archaeocidaris, 277, 279. 



Cidaris, 277, 278, 279. 

 vetustus, Archaeocidaris, 277. 



Echinocrinus, 277. 

 viridis, Echinometra, 146, 163. 

 ndgaris, Diadema, 27. 



Waagen, William, 280. 



Walcott, C. D., 260, 269. 



wervekei, Archaeocidaris, 259, 276. 



werwekei, Archaeocidaris, 276. 



Westergren, A. M., 198, 217. 



Whidborne, G. F., 420, 421, 441, 442. 



White, C. A., 10, 271, 274, 425, 426, 427, 428. 



Whitfield, R. P., 290, 400. 



whitfleldi, Lepidocentrus, 32, 237, 287, 290, 294. 



wiltoni, Acrosalenia, 111, 112, 157, 175, 176. 



Wood, Elvira, 380, 392, 449. 



Worthen, A. H., 363. 



Worthen, A. H., and Miller, S. A., 76, 269, 281, 421, 422. 



Worthen, A. H. See Meek, F. B., and Worthen, A. H. 



wortheni, Archaeocidaris, 70, 81, 82, 224, 256, 257, 258, 



259, 264, 267. 

 wortheni, Cidarotropus, 259. 



wortheni, Lepidesthes, 17, 27, 74, 374, 415, 416, 426, 444. 

 Wright, Joseph, 306. 

 Wrightella, 303, 311, 312, 317. 



phillipsiae, 316. 



wrighti, Peltastes, 11, 157, 174, 398. 

 Wrightia, 303, 311. 



phillipsiae, 316. 

 Wriglhia, 311, 316. 



Xenocidaris, 236, 245, 464. 



clavigera, 288, 454, 466. 



conifera, 455. 



cylindrica, 454, 455, 456. 

 Xy stria, 304, 451. 



koenigii, 451. 



Young, John, 278, 280, 457. 

 youngi, Melonechinus, 364, 457. 

 youngi, Melonites, 364, 467. 



zeylandiae, Phormosoma, 34. 



Zittel, K. A. von, 10, 250, 251, 302, 458. 



