1 66 



INDEX 



Pisidium sibiricum (144) 



steenbuchii (143) 



ultramontanum (144) 



variabile (142) 



ventricosum (143) 



virginicum (141) 

 Planaria (83) 

 Planella (120) 

 Planogyra 51 



aster iscusj/, 122 

 Planorbarius (8l) 

 Planorbe brun 80 

 Planorbella 81, 85 



campanulatus 90 

 Planorbina 81, 83, 84 



glabrata 86 



Planorbis 63, 80, 8l, 82, 83, 84, IO2, 

 (104), 105 



alabamensis 92 



albus 83, 86, (93), 94 



ammon 88 



andecolus 81 



arcticus g6 



armatus 97 



armiger 97, (98), 99 



armigerus 97, (98) 



bellus (90) 



bicarinatus 81, 84, 8j 



billingsi (95) 



binneji 87, 88, 89 



boissyi 82 



borealis (93), 94 



brongniartiana 91 



buchanensis 92 



calculus Si 



callioglyptus (92), 93 



campanulatus 81, 85, go 



carinatus 82 



centervillensis (92), 93 



complanatus 82, 85, 90 



concavus (95) 



contortus 83, 86 



corneus 80, 8ij 83, 84 



cornu-arietis 84 



corpulentus 87 



costatus (96) 



crista 96 



cristatus (96) 



declivis 98 



Planorbis deflectus 9^ 

 dilatatus 92 

 disjectus 89 

 draparnaldi 94 

 draparnaudi 94 

 elevatus (95) 

 engonatus (87) 

 exacuous 97, 92, 93 

 exacutus (91) 

 fontanus 82, 86 

 glabratus 86 

 guadeloupensis 81 

 hirsutus 93, 94 

 hispidus 83 

 hornii 89, 90 

 imbricatus (96) 

 lacustris 97 

 lens 91 



lentus (86), (88) 

 libanicus 82, 83 

 limophilus 95 

 lineatus 97 

 loryi 81 



macrostomus (88), 89, 90 

 major 87 

 marginatus 82 

 megas 91 



multivolvis 82, 85 

 nathorsti 96 

 nautileus (96) 

 nitidus 97 

 obliquus 94 

 occidentalis 89 

 olivaceus 84 

 opercularis 82, 86, 92 

 oregonensis 89, (92), 93 

 parallelus (52) 

 parvus 83, 86, p/, 96 

 planulatus 92, 93 

 rotundatus 82, 86 

 rudentis go, 91 

 subcrenatus (88), 89, 90 

 traskii 88 



trivolvis 81, 85, 87, 88, 89, 90 

 tumens 88, 89 

 turritus (106) 

 umbilicatellus 96 

 umbilicatus 82, 85, (96) 

 vermicularis 95 



