170 



INDEX 



Unio spatulatus (126) 

 trigonus (134) 

 undulatus (133) 

 ventricosus (125) 



Vallonia 22 



albula 23 



asiatica 23 



costata 23 



gracilicosta 23 



minuta (22) 



pulchella 22, 23 



rosalia (23) 

 Valvata 85, (120) 



carinata (121) 



confusa (121) 



cristata 120, 122, 124 



helicoidea 123 



humeralis 121 



jelskii 120, 121 



lewis i j 23 



mergella 124 



minuta 120 



nylanderi 122 



piscinalis 120, 121, 124 



sibirica 124 



simplex (121), 122, 123 



6incera 122, (123) 



striata (123) 



tricarinata 120, 121, 122 



unicarinata (121) 



virens 124 

 Valvatidae 120 

 Valvearius (120) 

 Velifera 36 

 Velletia (108), 109 

 Velutinopsis (6l), 62, 65 

 Vertigo 3, 29 



approximans (31) 



arctica 32 



arthuri (31) 



binneyana 31 



bollesiana (30) 



borealis 30 



callosa (33) 



castanea (29) 



columbiana JO 



elatior (31) 



gouldii^o 



Vertigo hoppii 29 



krauseana 32 



lagganensis (31) 



milium 32, 33 



modesta 29 



ovata 31, 32 



parietalis (29) 



pentodon (28) 



pygmaeajj 



simplex (54) 



ventricosa 31 

 Vertilla milium (32), 33 

 Vesica (59) 

 Vitrea 38, (40) 



binnejana 39 



fulva (41) 



indentata 39 



nitidula 39 



radiatula 38 

 Vitrina^, (36), 37 



alaskana 37, 38 



americana (37) 



angelic* 36, 37 



beryllina 37 



bicolor 36 



conoidea 36 



diaphana 36 



exilisj7, (38) 



lederi 36 



limpida 37 



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) 



