Trivial and Generic Names. 



29 



placenta Brissus, 403 

 placenta Clypsaster, 243 

 placenta Diadema, 64 

 placenta Echinocyamus, 220 

 placenta Echinoneus, 220 

 placenta Pseudodiadema, 64, 441 

 placenta Spatangus, 403, 486 

 placentula Echinobrissus, 26y 

 placentula Scutellina, 223, 224 

 placunarius Clypeaster, 243, 244 

 Plagionotus, 403, 405, 410, 424 

 plagiosomus Conoclypus, 322 

 plana Discoi'dea, 172 

 planatus Holectypus, 174 

 planatus Pygorhynchus, 299 

 planior Echinobrissus, 263 

 planissimum Pseudodiadema, 69, 486 

 planissimum Tetragramma, 69 

 planulatus Echinobrissus, 264 

 planulatus Echinocyanus, 225 

 planulatus Nucleolites, 264 

 planulatus Pericosmus, 398 

 planulata Sismondia, 225 

 planus Echinus, 132 

 planus Holectypus, 171, 172 

 planus Holaster, 342 

 planus Spatangus, 342 

 planus Tripneustes, 132 

 pleracantha Cidaris, 14, 447, pi. 6 

 Plotia, 50 (1855) 



plotii Hypodiadema, 61 (1855), 62 (1856) 



Podophora, 132, 137 



politus Clypeaster, 302 



politus Echinolampas, 302, 303, 304 



Polycyphus, 115, 117, 119, 122 



polygona Scutella, 226 



polygonus Epiaster, 362 



polygonus Micraster, 362 



polyporus Echinus, 128 



polyporus Stomechinus, 128 



polystigma Diadema, 73 



pomum Hemiaster, 397 



pomum Pericosmus, 397 



Porocidaris, 2, 46 



porosissimus Holopneustes, 133 



porpita Cassidulus, 224 



porpita Echinarachnius, 224 



porpita Scutella, 224 



porpita Scutellina, 224 



portentosus Clypeaster, 240 



poucheti Cidaris, 7 



pradoi Codiopsis, 1 12 



praelongus Hemipatagus, 418 



praelongus Spatangus, 418 



pratti Coelopleurus, 98 



Prenaster, 382, 401, 403, 424 



prestensis Salenia, 151, 488 



prestwichii Hemiaster, 375 



pretiosa Cidaris, 10, pi. 5 



prevostii Macropneustes, 412 



prima Brontia, 182 



primatica vide prismatica 



princeps Cidaris, 39, 40 



princeps Phymosoma, 89 



princeps Pseudodiadema, 65 

 princeps Rhabdocidaris, 40, 41, 485, 



pi. 8 



prionota Cidaris, 36, pi. 7 

 prior Collyrites, 206 

 prisca Archaeocidaris, 154 

 prisca Cidaris, 49 (1855), 154 

 priscum Diadema, 64 

 prisca Palaeocidaris, 49 (1855), 154 

 prisciniacense Pseudodiadema, 427 

 prisciniacense Diademopsis, 427 

 prisciniacense Hypodiadema, 427 

 prismatica Cidaris, 31, pi. 5 

 prismatica Rhabdocidaris, 437 

 productus Echinolampas, 312 

 productus Pygurus, 312, 314 

 producta Scutella, 233 

 profundus Clypeaster, 243, 244 

 profundus Echinanthus, 243 

 profundus Echinocyamus, 226 

 profunda Lagana, 226 

 profunda Sismondia, 226 

 propinqua Cidaris, 7, 8, 10, pi. 3 

 propinquus Dysaster, 204 

 propinquus Echinocyamus, 218 

 propinqua Scutella, 233 

 protei Cidaris, 48 (1855), 154 

 prunella Echinospatagus, 371 

 prunella Hemiaster, 367, 371, 372, 373 

 prunella Spatangus, 335, 370, 371 

 Psammechinus, 50 (1856), 114, 118, 119, 



123 



psammophorus Echinus, 126 

 Pseudodiadema, 49 (1856), 63, 64, 75 

 pseudodiadema Cidarites, 68 

 pseudodiadema Diadema, 68 

 pseudo-hemicidaris Hemicidaris, 56 

 pseudo-hemicidaris Diadema, 56 

 Pseudopedina, 490 

 pulchella Arbacia, 446 

 pulcher Echinus, 130 

 pulchellus Hemipatagus, 418 

 pulchella M agnosia, 446 

 pulchellus Peltastes, 145 

 pulchellum Pseudodiadema, 449 

 pulchellus Spatangus, 418 

 pulchellus Temnopleurus, 103 

 pulcher Stomechinus, 130 

 pulvinatus Conoclypus, 321 

 pulvinata Discoidea, 179 

 pulvinatus Echinobrissus, 268, 489 

 pulvinatus Echinolampas, 303 

 pulvinatus Galerites, 321 

 pulvinatus Macropneustes, 41 1 

 pulvinatus Micraster, 41 1 

 pulvinatus Pygaulus, 252, 253 

 pulvinatus Pygurus, 253 

 pumilus Pygaster, 166 

 punctatissima Cidaris, 35, pi. 6 

 punctata Cidaris, 11, pi. 5 

 punctatus Echinus, 441 

 punctatus Hemiaster, 369, 370 

 punctata Hyposalenia, 147 

 punctata M agnosia, 441 



