614 



COMPARATIVE ANATOMY 



ParmopJwrus {Senium), 5 

 Patella, 72 ; iieiihridi.a, 218 ; nervous 

 system, 138 ; section, 188 



,, vulgata, 4 



Patellida', 5 

 PaUneUa, 108 

 Paxillc-e, 391, 503 

 Pecten, 17 ; eye, 174 



,, Jacobeus, 16 

 Pect in ibranchia, 5 

 Pectinida'., 16 

 Prr/iniini. 300 

 Pr,-hi,ir„lii.-<, 15; eye, 175 

 Pedicellari^e, 393-399 

 Pcdkellaster, 299 

 Pedicellasterido}, 299 

 Pedina, 290 

 Pedipes, 109 



Pr/iv/oflnrria nrdnfrix, 285, 286 

 Prhnjulhiiriid,!, .'S5 

 l'r/,uurliintls, 290 



Pclccypoda, 14 

 Pdmatozoa, 302-315 

 Pc/fiisfes, 290 

 PcltcUa palliolum, 9 

 Peltida-, 10 

 Pen (Ceph.), 69 

 Peneagonc, 2S5 

 Pentaceros, 297 



„ ttirritus, oral skeleton, 473 



Pentacerotidce, 296 

 Pentacrinidce, 313 

 Pentacrinus, 313 



„ decorus, 377 ; calyx, section. 



382 

 Pentactoea, larva, 548 

 Pentactula, 516 

 Penfagonaster, 296 



Penfagonasteridm, 296 



Pin/.'/ilnilltnn, 315 



pt'iitr.'iiiitis, 315, 314 ; ambulacrum, 

 section, 382 ; apical system, 330 ; 

 organisation, 380 



Pentremitidw, 315 



Pentremitidea, 315 



Peraclis, 11 



Periechocrtnus, 307 



Periostracum, 58 



Per iscoechinu idea, 289 



Peristome, 339 



Perna, 17 



„ Ephipjnum, shell, 64 



Peronella orbicularis, 424 



Peronia (Moll.), 45 ; (Ech.), 290 



Perradii, 316 



Petalodium, 347 



Prfrin./,,, 52 



PdricoUdw, 18 



Phainoschisma, 315 



Plucnerozmiia, 296 



P/ucrus, 51, 115 



Philine, 46 



Philinidce, 10 



Philonexida;, 24 

 Philonexis, 24 



(Octopus) carence, hectocotylisa- 

 tion, 243 

 Phnladnrcn, 19 

 Plinhnllilo, 19 

 PliiAndidm, 19 

 Pholadornyidm, 51 

 Plwlas, 19 



„ daetylus, valve, 67 

 Phormosoma, 290 

 Phoriis ccrutus, 5 

 Pliragiuocone, 68 

 Phi/ilidiido; 13 

 Phyllirho'e, genital organs, 238 



,, bucephaluin, 12 



Philllirhoidce, 13 

 Pluillnhniiiclndcc, 12 

 Phyllodes, 347 

 PhyllopJwrus, 287 



„ urna, 502 



Physa, 8 



„ fontinalis, 8 

 Physetocrinus, 307 

 Pinna, 17 



Pinnules (Crin.), 371 ; (Blast.), 381 

 Pirocystis, 336 

 Pisidiu7n, 17 

 Pisocrinus, 304 

 Placobranchida;, 12 

 Placoplwra, 2 

 Placuna, 15 

 Plana.rida; 8 

 I>l,iiu,rliis, 8, 58 

 Plastidogcnic organ, 445 

 Plastron (Eclunoid.), 348 

 Plates, included, 340 ; isolated, 340 ; half, 



340 ; primary, 340 

 Platycrinidce, 307 

 Platycrinus triacontadactylis, 308 

 „ tuberosus, tegmen, 335 



Phiflldnris, 13 

 I-h:.inr;d,in,i,h,. 289 

 l'/,-sl,, spilt, iiKlidcr, 293 



Pleura, 182 



Pleurobranchcea, 10 



„ MeckeUi, genital organs, 



237 



Plevrohraiirhiii, 47 



l'l,',lfnhr,lll,-hidir, 10 



Pleui-nhiViirlnis, 18 



„ aurantiacus, 10 



Pleuroleimda;, 13 

 Phil i-i, fill nil id ill linciita, 13 

 ]'l,iin,l,liilUI,lii,hi, 13 

 I'h'iirntuiiiiiria, 5 ; shell, 59, 156 

 I'liii riiliiiniirida', 5 

 J'li'ii riitiimidce, 6 

 Pliodon Spekei, 125 

 Pluteus, larva, 508, 509, 522 

 Plutonaster, 296 

 Pneumoderma, 11, 79 

 Pneuvi odermatidie, 11 



