170 



INDEX 



Unio spatulatus (126) 

 trigonus (134) 

 undulatus (133) 

 ventricosus (125) 



Vallonia 22 



albula 23 



asiatica 23 



costata 23 



gracilicosta 23 



minuta (^2) 



pulchella 22, 23 



rosalia (23) 

 Valvata 85, (120) 



carinata (121) 



confusa (121) 



cristata 120, 122, 124 



helicoidea 123 



humeralis 121 



jelskii 120, 121 



lewisi 123 



mergella 124 



minuta 120 



nylanderi 122 



piscinalis 120, 121, 124 



sibirica 124 



simplex (121), 122, 123 



sincera 122, (123) 



striata (123) 



tricarinata 120, j2j, 122 



unicarinata (l2r) 



virens 124. 

 Valvatidae 120 

 Valvearius (120) 

 Velifera 36 

 Velletia (108), 109 

 Velutinopsis (61), 62, 65 

 Vertigo 3, 2g 



approximans (31) 



arctica 32 



arthuri (31) 



binnejana J/ 



bollesiana (30) 



boreal is 30 



callosa (33) 



castanea (29) 



Columbiana JO 



elatior (31) 



gouldii 30 



Vertigo hoppii 2g 



krauseana 32 



lagganensis (31) 



milium 32, 33 



modesta 2g 



ovata 21, 32 



parietalis (29) 



pentodon (28) 



pygmaeajj 



simplex (54) 



ventricosa 31 

 Vertilla milium (32), 33 

 Vesica (59) 

 Vitrea 38, (40) 



binneyana 3g 



fulva (41) 



indentata jp 



nitidula jp 



radiatula j5 

 Vitrinajj, (36), 37 



alaskana 37, 38 



americana ^37) 



angelicae 36, 37 



berjllina 37 



bicolor 36 



conoidea 36 



diaphana 36 



exilisj/, (38) 



lederi 36 



limpida J7 



major 36 



paulucciae 36 



pellucida 36, (37) 



pfeifferi (37) 

 Vitrinozonites 36 

 Vitrinus (35) 

 Vivipara 11 

 Viviparidae 124 

 Vortex 81 

 Vorticifex 63 



Zagrabica (61), 65 



brusiniana 65 



naticoides 61 

 Zonites (39) 



conspectus (53) 



fulvus (40) 



lansingi 44 



nitidulus (39) 



