212 



Index 



Theliderma Sw 43. 44 



Tintinnabulum (Anculosa) Lea 164 



Tornliatoni duckensis (UnioJ DeG 173 



Torquis Dall 13. 94 



Torsa (Obovaria) Raf 180 



Torta (Melania) Lea 200 



Tortum (Trypanostoma) Lea 200 



Torulosa (Amblema) Raf 186 



Toxolasma Raf 180 



Trabalis (Lampsilis) Con 184 



Tractum (Pleurocera) Lea 151 



Tiapezoides (Amblema) Lea 47 



Trapezoides (Ouadrula) Lea 170, 174 



Traskii (Physa) Lea no, 114 



Traskii (Planorbis) Lea 103 



Triangularis (Unio) Bar 186 



Triangularis longuisculus (Unio) DeG. . . 186 



Triangularis i)ergibbosa (Unio) DeG 186 



Tricarinata (Valvata) Say 27, 132 



Tricarinata basalis (Valvata) Van 132 



Tricarinata eonfusa (Valvata) Walk 132 



Tricarinata infracarinata (Valvata) Van. 132 

 Tricarinata perconfusa (Valvata) Walk. . 132 



Trigonus (Unio) Lea 48. i/i 



Triqueter (Truncilla) Raf 81 



Triquetra (Truncilla) Raf 186 



Triquetra triangularis (Truncilla) Bar. . . 186 



Triticea (Physa) Lea 108, 113, 115 



Tritogonia Agassiz 42, 45, 170 



Tritogonia (Ouadrula) (Jrt 170 



Trivolvis (Planorbis) Say 



II, 94, 98, 99, 100, 104 



Trivolvis binneyi (Planorbis) Tryon 104 



Troostiana (Physa) Lea no, 115 



Tropicorbis B. and P 94. loi 



Tropidina H. and A. Ads 132 



Tropidocyclas Dall 200 



Tropodiscus Stein 10, 12, 94 



Trothis (Somatogyrus) Doh 146 



Truncata (Truncilla) Raf 179 



Truncatula (Lymnrea) Mull 8 



Truncatum (Musculium) Lind 87 



Truncilla Raf 66,80,81,185 



Tryoni (Anculosa) Lewis 164 



Tryoni (Bulinus) Curr 116 



Tryonia Stimp 28, 29, 139 



Tuberculata (Obliquaria) Raf 49, 171 



Tuberculata (Rotundaria) Raf 170 



Tuberculata (Tritogonia) Bar 170 



Tuberculatus (Unio) Bar 45 



Tuberosus perlobatus (Unio) DeG 167 



Tulotoma Hald 24,26, 130 



Tumens (Planorbis) Coop loi, 104 



Tumens (Planorbis) Pfr 104 



Tumidus (Planorbis) Pfr 103 



Tuomeyi (Unio) Lea 175 



Turbiniformis (Amnicola) Tryon 142 



Turrita (lo) Anth 199 



LTmbilicata (Anculosa) Weth 164 



Umbilicatellus (Planorbis) Ckll 104 



LTmbilicatus (Neoplanorbis) Walk 123 



Umbilicatus (Planorbis) Miill 12, 94 



Umbilicatus (Planorbis) Taylor 104 



Umbilicatus (Somatogyrus) Walk 146 



L'mbonatum (Euryccelon) Lea 154 



Unakensis (lo) C. C. Ads 199 



Undata (Ouadrula) Bar 169 



Undata trigonoides (Fusconaia) "Fr." Utt. 170 



Undulata (Amblema) Bar 47 



Undulata (Quadrula) Bar 168, 170, 187 



Undulata pilsbryi (Quadrula) Marsh 170 



Undulata (Anodonta) Say 56, 176 



Undulata (Goniobasis) Tryon 161 



Undulata (Monodonta) Say 62 



Undulatum (Pleurocera) Say 153 



Unio Retz 174 



Uniomerus Con 43, 53 



Unionida: 39, 41, 165 



Unioninse Sw 42, 166 



LTnivittatum (Pleurocera) Lea 153 



Univittatum (Trypanostoma) Lea 153 



Urceus (Nerita) Miill 23 



Utahensis (Lymnaea) Call 9 



Utahensis (Valvata) Call 132 



Utterbacki (Pleurobema) Fr 173, 174 



Validus continuus (Unio) DeG 169 



Valvata Miill 27, 130 



Valvatida: 23, 26, 130 



Vanuxemensis (Lampsilis) Lea 184 



Variabilis (lo) Lea 153 



Ventricosa (Lampsilis) Bar 184 



Ventricosa cohongoronta (Lampsilis) Ort. 184 



Ventricosa satura (Lampsilis) Lea 184 



Venusta (Anodonta) DeG 176 



Venusta (Goniobasis) Lea 162 



Venusta (Lampsilis) Lea 185 



Venusta (Physa) Lea 115, 116 



Venustum (Pleurocera) Lea 133 



Venustum (Trypanostoma) Lea 153 



Vermicularis (Planorbis) Gld 104 



Verrucosa (Angitrema) Raf 164 



Verrucosa (lo) Rve 199 



Verrucosa (Obliquaria) Raf 170 



Verrucosa (Pleurocera) Raf 151 



Versa (Goniobasis) Lea 162 



Vibex (Lampsilis) Con 184 



Vinosa (Physa) Gld 115 



Violaceus (Unio) Speng 174 



Virens (Planorbis) C. B. Ads 98 



Virgata (Anculosa) Lea 164 



Virgata (Physa) Gld 109, 114, 115 



Virginea (Physa) Gld 1 1 .s 



Virgata alba (Physa) Ckll 115 



Virginica (Goniobasis) Gmel 162 



Virginica bilirata (Goniobasis) DeG 162 



Virginica (Tellina) Gmel 200 



Virginicum (Pisidium) Bgt 88 



Virginicus (Somatogyrus) Walk 146 



Viridis (Lasmigona) Raf 177 



Viridis (Symphynota) Simp 177 



Viridis (Unio) Raf 177 



Viridis fuscata (Unio) Raf J77 



Viridistriata (Goniobasis) Lea i6z 



Vivipara (Helix) L 24 



Viviparus Mont 24, 124 



Viviparidse 23, 24, 1 24 



Viviparus viviparus L 126 



