INDEX 



615 



Podocidaris, 290 

 Podocyst, 258 

 Polian vesicles, 416, 423 

 Polycera, 13 

 Polyplacophora, 2 

 Polytremaria, 5 ; shell, 59, 156 

 Pompholyx solid a, 160 

 Porcelainous layer of shell, 57 

 PorceUanaster, 296 

 Porcellanasteridce, 296 

 Pore rhombs (Cyst.), 384 

 Porocrinus, 313 

 Poromya, 51 

 Poromyidce, 21 

 Postpalmars (Grin.), 371 

 Poteriocrinus, 304 

 Pourtalesia, 295 



Je/reysi, 295 ; apical system, 



'325 



Pourtalesiidce, 295 

 Prseputium, 235 

 Prismatic layer of shell, 57 

 Proboscidifera holostomata, 6 



siphonostomata, 6 



Promachocrinus, 313 

 Proneomenia, 3 



Sluiteri, 3 ; nervous system, 



132 ; sections, 42 



,, vagans, 184 



Proneomeniidce, 3 

 Proostracum, 68 

 Propodium, 106 



Prosobrcmchia, 4 ', giUs> 90 > heart, 199 ; 

 proboscis, 179 ; sections, 110 ; snout, 

 section, 181 ; tentacles, 102 

 Prosoplax, 64 

 Prostata, 233 



Protobranchia, 14 ', gills, 92 

 Protocrinus, 313 



oviformis, 312 



Prunocystis, 332 

 Prymnadetes, 293 

 Prymnodesmia, 293 

 Psammobia, IS 

 Psammobiidce, 18 

 Pseudar chaster, 296 

 Pseudoconch, 47 

 Pseudolamell ihranchia, 15 

 Pseudomelanidce, 6 

 Pseudomonocyclic Criuoids, 329 

 Psolus, 287 



ephippifer, 287 

 Psychropotes, 285 



longicauda, 285 



Psychropotidce, 285 

 Pteraster, 298 

 Pterasteridce, 298 

 Pterasterince, 503 

 Pterobranchia, 12 

 Pterocera, 107 

 Pteropoda, 10 ; larva, 257 

 ,, gymnosomata, 11 

 ,, t/iecosmnata, 11 



Pterotrachceidce, 6 

 Pterotrachea, 109 



,, auditory organ, 168 



,, (Firola) coronata, 1 



PtycJwdera, 562 



aurantiaca, 585 



,, ba/uimensis, 585 



,, clavigera, 570 



., erythrcea, 585 



minuta, 562 ; branchial region, 



section, 562 ; head region, 



section, 566, 568 ; ccelorn, 



diagrams, 576 



PulniiiHatd, S, 32 ; eye, 170 ; radula, 183 ; 



renal ducts, diagram, 75 

 Pupa, 8 

 Pupidce, 8 

 Purpura, 101 

 Purpuridce, 6 

 Pygaster, 291 

 Pi/gurus, 293 

 Pi/ram idellidce, 6 

 Pyriform vessel (Gastr.), 220 

 Pyritla, 44 



,, tuba, 73 

 Pythonaster, 29S 



RACHIAL teeth, 182 



Rachiglossa, 6 



Radial shields, 362 



Radials, 318 



Radiiififiifn; 18 



Radula, 177, 180-183 



Red-brown organ (Keber's organ), 215 



Regulares, 315 



Reptantia, 10 



Requienia, IS 



Retaster, 298 



Rete miraliile (Hoi.), 452 



Retiocrinidce, 306 



Retiocrinns, 306 



Rhabdopleura, 600-602 



,, Normani, 601 ; section, 



602 



Rhachiglossa, 6 

 Rhinophore, 48, 103 

 Rhipidocrinus, 306 

 Rhipidoglossa, 4 

 Rhizochilus, 183 

 Rhizocrinus, 311 



,, lofutensis, 335 ; axial canals, 



378 ; stone canal, 423 



Rawsoni, 335 



Rlwdocrinidce, 306 

 Rhodocrinus, 306 

 Rhodope Veranii, 281 

 RJwpalodina, 287 



derivation of, 408 



Rimula, 43 

 Ringiculidce, 46 

 Rissoicke, 108 

 Rizzolia, 13 

 Russia, 24 



