INDEX 



167 



Planorbis virens gj. 



vortex 82, 85 



vulgaris 82 



wheatleyi 97, 98 



yzabalensis 82, 86 

 Planorbula (97), 98 



armigera 98 



christyi 99 

 Plesiophysa 101 

 Pleurocera 116 



canaliculata 116 

 Pleurolimnaea (60), 63, 64 



tenuicostata 60 

 Poejia (108) 



gundlachioides 108 

 Polita (39) 



fulva (40) 

 Polygyra 24 



albolabris 26 



columbiana 24, 34 



devia 24 



germana 23, 26 



labiosa (24) 



megasoma 26 



monodon 26 



ptychophora 25 



santacru/ensis 24 



townsendiana 2j 

 Polygyrus (83) 

 Polyrhytis (61), 63, 64 

 Pomatiopsis ng 



lapidaria 119, (120) 

 Pompholyx 63 

 Primella raymondi (139) 

 Pristiloma 44 



arctica 45 



idahoense 44 



lansingi 44 



pilsbryi 44 



stearnsi (44), 45 



stearnsii 44 



taylori 44 

 Prophysaon 46 



andersoni 46 



cceruleum 47 



dubium (47) 



fasciatum (47) 



flavum (46) 



foliolatum 47 



Prophysaon hemphilli (46), 47 



humile 47 



marmoratum (46) 



obscurum (47) 



pacificum (46) 



pallidum (46) 



suffusum (46) 

 Proptera alatus (127) 

 Protancylus 109 

 Pseudohyalina minuscula (43) 



pugetensis (43) 

 Pterosygna 131 

 Pulmobranchia 101 

 Punctum jj 



asteriscus 53 



conspectum 10, jj 

 minutissimum (53) 

 pugetensis (43) 

 pygmaeum jj 

 randolphi jj 



Pupa alticola (54) 

 arctica (32) 

 armifera (27) 

 badia (28) 

 bigranata (28) 

 blandi (28) 

 columella (54) 

 contracta (27) 

 corpulenta (29) 

 costulata (21) 

 decora (29) 

 edentula (54) 

 exigua (116) 

 gouldii (30) 

 gredleri (54) 

 holzingeri (28) 

 hoppii (29) 

 lundstromi (28) 

 milium (32) 

 modesta (29) 

 pentodon (28) 

 pygmaea (33) 

 signata (28) 

 simplex (54) 

 steenbuchi (29) 

 superioris (33) 



Pupidx 27 



Pupilla 28 



