402 



INDEX. 



Plagioptychus, Math 



III 



PAGK 



200 



Plectrophorus, Per. 



Ill 



PAGE 



13 



Plagiostoma, Sowb. 



III 



288 



Plectopylis, Benson. 



III 



33 



Plagiostyla, Fischer. 



II 



263 



Plectosolen, Conr. . 



III 



130 



Planaria, Brown. . 



II 



220 



Plectostoma, Ads. . 



II 



283 



Planaxidse. . . . 



11 



246 



Plectostylus, Beck. 



III 



50 



Planaxis, Lamarck. 



II 



246 



Plectostylus, Conr. 



II 



231 



Planella, Schliitt. • 



II 



273 



Plectoteuthis, Owen. 



II 



39 



Planicirrus, Ryck. 



II 



218 



Plectotropis, Albers. 



III 



39 



Planispira, Beck. . 



III 



45 



Plesiodiceras, M.-C. 



III 



199 



Planogyra, Morse. 



III 



29 



Plesiophysa, Fisch. 



III 



104 



Planorbella, Grabb. . 



II 



94 



Plesioteuthis, Wagner. II 



33 



Planorbella, Hald. 



III 



106 



Plesiothyris, Douv. 



III 



309 



Planorbinse. . . . 



III 



105 



Plesiotrochus, Fisch. 



II 



242 



Planorbis, Gruettard. 



III 



106 



Plethomytilus, Hall. 



III 



276 



Planorbitina, Betta. 



II 



273 



PJeuratella, Moore. 



II 



302 



Planorbula, Hald. 



III 



107 



Pleurobema, Rafin. 



III 



239 



Plaiiulites, Montf. . 



II 



81 



Pleurobranchsea, Mk 



. II 



366 



Plannlites, Munster. 



II 



65 



Pleurobranchidse. . 



II 



366 



Platidea, Costa, 



III 



312 



Pleurobranchidium,Bl. II 



366 



Platiris, Lea. . . 



III 



242 



Pleurobranchns, Cuv. 





366 



Platyacra, A mm on. 



II 



307 



Pleurocera, Raf. 





256 



Platyceras, Conr. . 



II 



214 



Pleuroceras, Hyatt. 





75 



Platycloster, Hasselt. Ill 



27 



Pleuroconcha, Conr. 



III 



224 



Platydoris, Bergh. . 





374 



Pleurodesma, Homes 



.III 



140 



Platygyra, Morch. . 





248 



Pleurodon, Wood. . 



III 



260 



Plat}' m}' a, Agass. . 



III 



150 



Pleurodonta, Fisch. 



III 



32 



Platyodon, Conrad. 



III 



137 



Pleuroleura, Bergh. 





393 



Platyoptera, Conr. 





191 



Pleuroleurinffi. . . 





393 



Platyostoma, Conr. 





208 



Pleurolimnsea, Meek. 



III 



101 



u a 





241 



Pleuromeris, Conr. 



III 



233 



Platyphysa, Fisch. 



III 



103 



Pleuromya, Agass. 



III 



148 



Platypleuroceras, Hy 





76 



Pleuronautilus, Mojs 



III 



348 



Platyschisma, M'Coy 





218 



Pleuronectia, Swains. 



III 



290 



Platysuccinea, Ance}' 



!iii 



58 



Pleuronotus, Hall. . 





218 



Platy stoma, Homes. 





220 



Pleurophorns, King. 



III 



234 



Platystrophia, King. 



III 



328 



Pleurophyllidia,Meck. II 



392 



Plebecula, Lowe. . 



III 



43 



Pleurophyllidiinee. . 





392 



Plecotrema,H.& A. A. Ill 



94 



Plenropus, Esch. . 





90 



Pleiodon, Conrad. . 



III 



242 



Pleuropus, Rafin. . 





384 



Pleioptygma, Conr. 



II 



166 



Pleuropygia, Bronn. 



III 



334 



Plectambonites, Pan. 



III 



331 



Pleurop^Tgus, Mart. 



III 



53 



Plecticolimax. . . 



III 



79 



Pleurorhjnichus, Ph. 



III 



195 



Plectocheilus, Gruild. 



III 



52 



Pleurotoma, Lamarck. II 



183 



Plectodon, Carp. . 



III 



139 



u a 



III 



350 



Plectomj^a, Loriol. 



III 



149 



Pleurotomaria, Defr. 



II 



318 



u u 



III 



150 



Pleurotomariidse. . 



II 



318 



