274 



INDEX 



Opalina, 18 

 Ophiura, 211, 219 

 Ophiurida, 211 

 Ophiuroidea, 211, 219 

 Opisthobranchia, 123 

 Orbicella, 42, 61 

 Orthoptera, 167 

 Oscarella, 36 

 Ostracoda, 165 

 Ostrea, 122, 137 

 Oxytricha, 19, 29 

 Oyster, 137 



Pagurus, 166, 179 

 Pallene, 166 

 Pantopoda, 166 

 Paramecium, 18, 25 

 Parasabella, 107 

 (Parypha) Tubularia, 41, 51 

 Patella, 123 

 Pauropoda, 167 

 Pauropus, 167 

 Pecten, 122, 136 

 Pectinaria, 90, 101 

 Pectinatella, 86, 88 

 Pectinibranchia, 123 

 Pedata, 212 

 Pedicellina, 86 

 Pedipalpida, 166 

 Pelecypoda, 122, 124 

 Pennaria, 41 

 Pennatula, 42 

 Pennatulacea, 42 

 Pentacrinus, 212 

 Peranema, 17 

 Pericolpa, 42 

 Peripatus, 166 

 Peritricha, 19 

 Peromedusae, 42 

 Perophora, 232, 238 

 Petasus, 41 

 Phacus, 33 

 Phalangida, 166 



Phalangium, 166 

 Phanerozonia, 211 

 Phascolosoma, 90, 119 

 Phoronidea, 231 

 Phoronis, 231 

 Phoxichilidium, 166, 198 

 Phrynus, 166 

 Phylactolaemata, 86 

 Physalia, 41, 54 

 Phytomastigophora, 21 

 Phytomonadida, 21 

 Placophora, 122 

 Planaria, 66, 67 

 Planocera, 66, 70 

 Plasmodium, 20 

 Platyhelminthes, 66 

 Pleurobrachia, 63 

 Pleurotricha, 29 

 Plumatella, 86, 88 

 Pneumoneces, 71 

 Podophrya, 19 

 Polychaeta, 90 

 Polychoerus, 66 

 Polyclad, 70 

 Polycladida, 66 

 Polygordius, 90 

 Polymastigida, 17 

 Polynoe, 90, 96 

 Polystomum, 66 

 Polyzoa (Cestoda), 66 



(Molluscoida), 86 

 Porcellio, 184 

 Porifera, 36 

 Preparations, 245 

 Proteomyxa, 18 

 Protobranchia, 122 

 Protochordata, 231 

 Protomastigota, 17 

 Protomonadida, 17 

 Protophyta, 21 

 Protozoa, 17 



Pseudoamellibranchia, 122 

 Pseudoscorpionida, 166 

 Pterobranchia, 231 



