Ti'ivial 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, 40^, 4"Sb 



placentula Echinobrissus, 26y 



placentula Scutellina, 223, 22j__ 



placunarius Clypeaster, 243, 244 



Plagionotus, 403, 405, 410, 424r ' 



plagiosomus Conoclypus, 322 



plana Discoïdea, 172 



planatus Holectypus, 174 



planatus Pygorhynchus, 299 



planior Echinobrissus, 263 



planissimum Pseudodiadema,_62j 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 



l'iotia, 50 (1855) "~ 



plotii Hypodiadema, 61 (1855), 62 ('856) 



Podophora, 132, r^z. '^ 



politus Clypeaster, 302 



politus Echinolampas, 302, 303, 304 



Polycyphus, 115, 1 17 , 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 



poi'pita Cassidulus, 224 



porpita Echinarachnius, 224 



porpita Scutella, 224 



porpita Scutellina, 224 



portentosus Clypeaster, 240 



poucheti Cidaris, 7 



pradoi Codiopsis, 112 



praelongus Hemipatagus, 418 



praelongus Spatangus, 418 



pratti Coelopleurus, 98 



Prenaster, 382, joi^ 403, 424 



prestensis Salenia, _i_^) 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, 



— -ai 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 

 prêtai Cidaris, 48 (1855), 154 

 prunella Echinospatagus, 371 

 prunella Hemiaster, 367, 37^, 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 Magnosia, 446 

 pulchellus Peltastes, 145 

 pulchellum Pseudodiadema, 449 

 pulchellus Spatangus, 418 

 pulchellus Temnopleurus, 103 

 pulcher Stomechinus, 130 

 pulvinatus Conoclypus, 321 

 pulvinata Discoulea, 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 Magnosia, 441 



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