102 



Heterodiscus (82), 83 

 Hippeutes (82) 

 Hippeutis Si, 86, (97) 

 Hyalina (35), (39) 



arborea {42) 



arctica (45) 



binnejana (39) 



binneji (39) 



fulva (40), (41) 



indentata (39) 



nitida (42) 



pellucida (38) 



viridula (38) 

 Hyalinia (39) 



fulva (40) 



trochiformis {41) 



lelskia (120) 

 Isidora 100, loi, 105 



wahlbergi loi 

 Isfhmia ventricosa (31) 



pygmsa 33 



Jelskia (120), 121 



Laevapex 109 



fragilis IIO 



kootaniensis no 

 Lampsilis 12^ 



alatus 126, 127 



borealis 126 



ellipsiformis 126 



gracilis 127 



ligamentinus 126 



luteolus 12^ 



radiatus 126 



rectus 126 



superiorensis 125 



ventricosus 12^ 

 Lantzia. See Erinna. 

 Lanx 109 

 Lasmigona 131 

 Leachia (60) 



stagnalis 60 

 Legrandia (108) 

 Le Liri iii 



Leptolimnaea glaber 64 

 Leptolimnea (60), 62, 64 



elongata 60 



Leptolimnea glaber 60 

 Leptolimneus (61) 



glaber 61 

 Limacidae 45 

 Limacina (35) 

 Limax agrestis (45) 



berendti 46 



columbianus (47) 



hemphilli 46 



hewstoni (46) 



hyperborea (45) 

 Limnaea (60), (5i), 62, (105) 



ampla (68), (69) 



angulata (68) 



arctica (75) 



binneji (69) 



bulimoides (79) 



canadensis (69) 



decisa (125) 



decollata (68) 



elodes (76) 



elongata (75) 



emarginata (69) 



exilis (72), 77 



ferruginea (72) 



glabra 61 



gronlandica (75) 



haydeni (76) 



holboUi (74) 



kingi 61 



kirtlandiana (72) 



lanceata (72) 



leucostoma (75) 



megalosoma (67) 



megastoma (67) 



mighelsi (68) 



minor (75) 



molleri (75) 



nuttalliana (76) 



philadelphica (74) 



plebeia (76) 



proxima (76) 



scalaris (69) 



senegalensis (75) 



stagnalis (65) 



traski (74) 



umbilicata (79) 



vahlii (74) 



velutina 6r. 65 



