i68 



Pupilla badia (28), (29) 



blandi 28 



muscorum 28, (29) 

 Pyramidula 49 



alternata 4g 



asteriscus J/ 



cronkhitei 50, 51 



limitaris 4g 



randolphi (53) 



ruderata 50, 51 



solitaria ^9 



striatella^o 



Quadrula 133 

 heios jj^ 

 hippopjea 133 

 lachrymosa /JJ 

 plicata /JJ 

 rubiginosa 1J4 

 undulata IJS 



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 ^8 



christji gg 

 Selenites 33 



vancouverensis (34) 

 Semilimax (35), (36) 

 Siphonaria /// 



sipho III 



thersites /// 

 Siphonariidse i/i 

 Sphseriidae 134, 145 

 Spharium 134 



aureum 135 



cooperianum (139) 



corneum 135 



dentatum 136, /J/ 



emarginatum /j5 



Sphaerium fabale 137 



fabalis (136) 



flavum ijS 



jayanum fjy 



lenticula 140 



medium 140 



nobile /J7 



occidentale 136, /j/ 



partumeium /jg 



patella Ij8 



primeanum 14/ 



raymondi ijS 



rhomboideum Ij6, 141 



simile 1J4 



solidulum /j6 



6pokani ijS 



stagnicola J40 



stamineum /j6 



striatinum fjj 



sulcatum (134) 



tenue /jg, 140 



transversum /J9 



truncatum 140 



tumidum /j8 



walkeri 135 

 Sphyradium J4 



edentulum J4 

 Spiralina (81) 

 Spirodiscus corneus (81) 

 Spirorbis (82) 

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



adelina; 78 



anticostiana 7g 



bulimoides 79 



caperata 79 



catascopium 77 



communis (76) 



emarginata 68 



palustris 76 



perpolita 78 



reflexa 77 

 Stenotrema germanum ^25) 

 Strepomatidae /j6 

 Striatura milium (43) 

 Strobila labyrinthica 27 

 Strophitus 7^7 



edentulus (127) 



rugosus 7^7 

 Succinea (55). 55- 71- 105 



