1 68 INDEX 



Pupilla badia (28), (29) 



blandi 28 



muscorum 28, (29) 

 PjTamiduIa 49 



alternata 4g 



asteriscus S' 



cronkhitei 50, 51 



limitaris 4Q 



randolphi (53) 



ruderata 50, 51 



eolitaria 4g 



striatella jo 



Quadrula 133 

 heros tjj 

 hippopaea 133 

 lachrjmosa 133 

 plicata ijj 

 rubiginosa 134. 

 undulata 133 



Radix (60), 62, 63, 64, 65, 67, 68, 71, 72 



binneji 69 



columella 70 



mighelsi 68 



randolphi 71 

 Rivicola (99) 



Sandria 65 

 Saraphia (115) 



tridentata 115 

 Segmentaria (97) 

 Segmentina 97, 98 



armigera g8 



christyi gg 

 Selenites 33 



vancouverensis (34) 

 Semilimax (35), (36) 

 Siphonaria iii 



sipho III 



thersites /// 

 Siphonariidae zii 

 Sphaeriidae 134, 145 

 Spliaerium 134 



aureum 135 



cooperianum (139) 



corneum 135 



dentatum 136, 13J 



emarginatum 138 



Sphaerium fabale 137 



fabalis (136) 



flavum 138 



jayanum i3g 



lenticula 140 



medium 140 



nobile 137 



occidentale 136, /j/ 



partumeium /jp 



patella 138 



primeanum 141 



raymondi 138 



rhomboideum /jd, 141 



simile 134 



solidulum 136 



spokani 138 



stagnicola 140 



stamineum 136 



striatinum 133 



sulcatum (134) 



tenue J3g, 140 



transversum i3g 



truncatum 140 



tumidum 138 



walkeri 135 

 Sphyradium 34 



edentulum 34 

 Spiralina (81) 

 Spirodiscus corneus (81) 

 Spirorbis (82) 

 Stagnicola (60), 62, 64, 68, 71, 72, 74 



adelinae 78 



•nticostiana 79 



bulimoides 79 



caperata 79 



catascopium 77 



communis (76) 

 emarginata 68 



palustris 76 



perpolita 78 



reflexa 77 

 Stenotrema germanum (25) 

 Strepomatidae 116 

 Striatura milium (43) 

 Strobila labyrinthica 27 

 Strophitus 127 



edentulus (127) 

 rugosus 127 

 Succinea (55), 55, 7i, 105 



