241 



Lafoea gracillima 177, /gj 



pocillum (193) 

 Lampsilis /^y 



alatus 126, 127 



borealls /26 



ellipsiformis 126 



gracilis /2y 



ligamentiiuis /26 



luteolus 7^5 



radiatus 126 



rectus 126 



superiorensis 125 



ventricosus 7^5 

 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 



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), (61), 62, (105) 



ainpla (68), (69) 



angulata (68) 



arctica (75) 



binneyi (69) 



bulimoides (79) 



canadensis (69) 



decisa (125) 



decollata (68) 



elodes (76) 



elongata (75) 



emarginata (69) 



exilis (72), 77 



ferruginea (72) 



glabra 61 



imnaea gronlandica (75) 



haydeni (76) 



holbolli (74) 



king! 61 



kirtlandiana (72) 



lanceata (72) 



leucostoma (75) 



megalosoma (67) 



megastoma (67) 



mighelsi (68) 



minor (75) 



molleri (75) 



niittalliana (76) 



philadelphica (74) 



plebeia (76) 



proxima (76) 



scalaris (69) 



senegalensis (75) 



stagnalis (65) 



traski (74) 



umbilicata (79) 



vahlii (74) 



velutina 61, 65 

 Limnaeus decollatus (68) 



elodes (76) 



elongatus (77) 

 Limnea (60) 



adelins (78) 



caperata (79) 



catascopium (68) 



cochlea (59) 



columella (70) 



desidiosa (73) 



expansa (76) 



fragilis (76) 



galbana (74) 



gracilis 60 



humilis (73) 



megasoma 60, (67) 



serrata (69) 

 Limneus (60) 



desidiosus (73) 



emarginatus (68) 



minutus (72) 



ontariensis (68) 



palustris (76) 



stagnalis (60) 



umbrosus (77) 

 Limnophysa (60), 62 



