266 



INDEX 



Otusia, 50, 52 

 ovalis (Pentamerus), 178 

 Ovarian markings, 33 

 ovata (Orthis), 76 

 ovata (Productorthis), 83 

 oweni (Rhipidomella), 134 



Pahlenella, 10, 107, 117 



Pal^ostrophomena, 94, 100 



Paleoecology, 16 



Palintrope, 9 



Pallial markings and sinuses, 9, 32, 40 



palmata (Syntrophina), 156 



Pander, C. H., 113, 117 



panderi Billings ("Camerella"), 168 



panderi Opik (Estlandia), 1 15 



panderiana (Orthis), 75, 86 



Panderina, 74, 81 



papyracea (Gypidula), 174 



parallela (Productorthis), 83 



parallelus (Porambonites), 102 



Parastro-phia, see Camerella 



divergens, see Parastrophinella 

 greenei, see Camerella 

 hemiplicata, see Camerella 



rotunda, see Camerella 

 latiplicata, see Parastrophinella 

 multiplicata, see Parastrophinella 

 ops, see Parastrophinella 

 reversa, see Parastrophinella 

 rotundiformis, see Camerella 

 scofieldi, see Camerella 

 Parastrofhina, see Camerella 

 Parastrophinella, 164, 166, 167, 169 

 Parenteletes, 6, 19, 30, 145, 146, 147 

 Parmorthis, 22, 25, 36, 39, 125, 126, 128 

 parva Billings ("CamereUa"), 168 

 parva Opik (Vellamo), 114 

 parva Pander (Paurorthis), 79, 80 

 Parvicostells, 7 



parvula Lamansky (Paurorthis), 79 

 parvulus Savage (Pentamerus), 178 

 patera ("Heterorthis"), 138 

 pauciplicata (Platystrophia), 65 

 Paurorthis, 10, 74, 79, 81 

 pavilionensis (Pentamerella), 176* 

 pecosi (Rhipidomella), 134 

 pectinella (Dinorthis), 93, 95, 96 



sweeneyi (Dinorthis), see sweeneyi 

 Pedicle callist, 9, 33* 

 foramen, 9 

 muscles, 9, 30, 31 

 pelagica (Gypidula), 174 

 peloris (Rhipidomella), 134 

 penelope (Rhipidomella), 134 

 penniana (Rhipidomella), 134 

 pennsylvanica (Rhipidomella), 134 

 pentamera (? Enteletes), 146 

 Pentameracea, 28, 43, 161 

 Pentamerella, 165, 166, 171, 176 

 Pentameridae, 27, 161, 162, 164, 165, 170 

 Pentamerinx, 162, 163, 165, 166, 171, 177 

 Pentameroidea, 43, 154 

 Pentameroides, 164,* 166, 178, 179 



pentameroides (Enteletina), 148 



Pentamerus, 10, 27, 162, 163, 164,* 165, 166, 177, 178 



acutolobata, see Gypidula 

 procerula, see Gypidula 



caducus, see Gypidula 



globus, see Gypidula 



knappi, see Rhipidium 



linguifera, see BarrandeDa 



microcamerus, see Stricklandia 



optata, see Brooksina 



pelagica, see Gypidula 



proxima, see Liocoelia 



subrectus, see Pentameroides 



ventricosus, see Porambonites 

 pepina (Billingsella), 49 

 peraltus (Hemipronites), 116 

 Perditocardinia, 133, 135 

 perelegans (Isorthis), 36, 150 

 pergibbosa (Lissocoelina), 179 

 perilla (Syntrophina), 156 

 perlatus (Hemipronites), 116 

 perminuta (Rhipidomella), 134 

 perpasta (Jamesella), 46 



macra (Jamesella), 46 



subquadrata (Jamesella), 46 

 pcrsonata (Proschizophoria), 123 

 pesovis (Pentamerus), 178 

 Pionodema, 22, 23, 30, 37, 38, 139, 140, 141, 144 



globosa, see Mimella 



minuscula, see Mimella 



PlONORTHIS, 94, 95 



Pl.esiomys, 10, 31, 33, 35, 94, 95, 96 



brevis, see Multicostella 



elongata, see Multicostella 

 plana (Productorthis), 83 

 planareas, 165 

 Planidorsa, 24, 94, 100 

 planissimus (Productorthis), 83 

 planoconvexa Butts (Taffia), 85 

 planoconvexa Hall (Platyorthis), 36, 135 

 planus (Clitambonites), 113 

 planus (Gonambonites), 118 

 planus (Porambonites), 102 



retroflexus (Billingsella), 49 

 Platymerella, 163, 166, 178, 184 

 Platyorthis, 36, 133, 135 

 platys (Multicostella), 98 

 Platystrophia, 19, 31, 36, 55, 64 



fernvalensis, see Mcewanella lineolata 

 Platystrophiinx, 56, 58, 64 

 playfairi (Orthis), 76 

 Plectambonites, 38 

 Plectambonitins, 112 

 Plectella, 38, 107, 112 

 Plectellinx, 107, 112 

 Plectorthids, 34, 36, 38, 39, 44, 48, 56 

 Plectorthinx, 57, 58 

 Plectorthts, 26, 36, 38, 54, 57, 58, 68 



crassiplicata, see Cyclocoelia 



sectistriata, see Cyclocoelia 



sordida multiplicata, see Cyclocoelia 



whitfieldi, see Austinella 

 Plica, 10 

 plicata Bancroft (Horderleyella), 127 



