562 BULLETIN 10 0, UNITED STATES NATIONAL MUSEUM 



roissyana, Cochlostyla (Calocochlea) 

 roissyana, 387, 393. 



Helicostyla, 393, 394. 



Helicostyla (Calocochlea), 394. 



Helix, 389, 393, 394, 397. 



Helix (Callicochlias), 394. 

 roissyana var., Cochlostyla, 397. 



var., Helix, 391. 



var. c, Cochlostyla, 391. 



var. d, Cochlostyla, 397. 



var. d, Helix, 389. 



var. e, Cochlostyla, 396. 



var. m, Cochlostyla, 391. 



var. q, Cochlostvla, 398. 

 rollei, Cochlostyla, 489, 493. 



Cochlostyla (Chrysallis), 487, 488, 

 502, 504. 



Cochlostyla (Chrysallis) rollei, 488. 



Helicostyla (Chrysallis), 488. 

 Roperia, 143, 146. 



tessellata, 143, 181. 

 roperiana, Biddulphia, 45. 

 roperianus, Asteromphalus, 30. 

 rosea, Cochlostyla (Chrysallis) roseo- 



labra, 497-499. 

 roseolabra, Cochlostyla (Chrysallis), 

 497. 



Cochlostyla (Chrysallis) roseolabra, 

 497. 

 rotula, Actinocyclus, 13. 

 rotundas, Cerataulus, 37. 

 rubida, Stylocidaris reini, 293, 295, 308, 



310. 

 rubra, Stereocidaris grandis, 301, 309. 

 rudis, Biddulphia, 45, 177. 

 rufa, Campanularia, 210, 211. 



Zygophylax, 199, 210. 

 rufogaster, Bulimus, 331, 334, 335. 



Cochlostyla, 329-337. 



Cochlostvla rufogaster, 331, 334. 



Helix (Biilima), 334. 



Orthostyla, 334, 335. 



Orthostylus, 334. 

 rufogaster subsp., Cochlostyla, 337. 

 rufogastra, Bulimus, 335. 



Cochlostyla, 330, 333, 335. 



Helicostvla, 335. 

 Rutilaria, 143, 144. 



epsilon, 144. 



philippinarum, 143. 



pulchra, 143. 



radiata, 144. 



tenuicornis, 144. 

 Sabellariidae, 190. 

 sablayana, Obba mesai, 357, 358. 

 salcedoi, Obba planulata, 361, 364. 

 ealinarum, Nitzschia, 128. 

 eamoensis, Campylodiscus, 50, 52, 55. 



Navicula, 119. 

 sansibarica, Mastoploia, 91, 92. 

 6apolana, Cochlostyla (Helicostyla) ful- 



gens, 400, 404. 

 sarcinosa, Cochlostyla (Helicobulinus), 



433. 

 sarcochroa, Obba, 343. 



Obba sarcochroa, 356. 

 sarniensis, Amphora, 28. 

 scabriuscula, Amphora, 22. 



scalaris, Amphora, 26. 



Campylodiscus, 54. 



Obba listeri, 351, 353. 

 Scalpellum, 299. 

 sceptrifera, Stereocidaris, 292. 

 sceptriferoides, Stereocidaris, 306. 

 Sceptroneis, 144. 



cuneata, 144, 159, 181. 

 Schizocidaris, 275, 276, 282. 



assimilis, 276, 279, 280. 



fasciata, 243, 276, 280, 281 (fig.), 

 308, 310, 311. 



serrata, 243, 276, 278-279 (fig.), 

 308, 310, 311. 

 sclileinitzii, Actinodiscus, 13. 



Polymyxus, 14. 



Surirella, 49, 156, 157. 

 schmidtii, Amphora, 8, 27. 



Auliscus, 33. 



Biddulphia, 46. 



Campylodiscus, 54. 

 Schmitt, W. L., 183. 

 schneideri, Scoliopleura, 90. 

 Schuettia, 14. 



scimiter, Climacosphenia, 59, 177. 

 scintillans, Coscinodiscus, 64. 

 scitula, Biddulphia, 8, 39, 46. 



Biddulphia (Triceratium), 35. 

 scitulum, Biddulphia (Triceratium), 38. 



Triceratium, 39, 46. 

 scitulus, Coscinodiscus, 70, 178. 

 Scoliopleura, 59, 71, 90, 94, 144. 



latestriata, 144. 



partistriata, 144, 181. 



peisonis, 90. 



schneideri, 90. 



thumi, 144. 



tumida, 89. 

 Scoliotropis, 144. 



tumida, 144. 

 scolopendra, Chaetoceros, 57. 

 scopulorum, Navicula, 147, 148. 



Okedenia, 14S. 

 sculptum, Trigonium, 170, 171. 

 scutellum, Cocconeis, 62. 

 Secallia, 80, 144. 



caballeroi, 81, 144, 178. 

 secedens, Biddulphia, 46. 

 secunda, Aglaophenia (Lytocarpia) , 234. 

 secundus, Lytocarpus, 234. 

 seductilis, Navicula, 119. 

 sejuncta, Navicula, 117. 

 semistauros, Navicula, 119, 180. 

 Semper, Carl, 375. 

 separabilis, Navicula, 8, 99, 120. 

 seriata, Mastogloia, 92. 

 serpentina, Grammatophora, 79. 

 serrata, Discocidaris, 276. 



Schizocidaris, 243, 276, 278-279 

 (fig.), 308, 310, 311. 

 serratula, Navicula, 120, 180. 

 serrulata, Navicula, 7. 



Obelia, 202. 

 Sertaria, 198. 

 Sertomminae, 196. 

 Sertularella, 197, 204, 214, 221. 



cornuta, 195, 199, 215, 216, 241. 



mirabilis, 199, 216, 241. 



