324 



INDEX OF GENERA AND SPECIES. 



Tunis (Surcula) 



Page. 



contortu.s 10;j 



hitzia 103 



texauus 49 



TuiTltella 46, 134, 143, 158, 208, 210. 211, 212, 



213, 214, 216, 217, 2i9 



( Aclis .') micronenia 76, 143 



altilira '-316 



bilineata '-J31 



coalvillensis 7G, 143 



convexa 14 



gatunensis 'ilH 



ineznna 'il7 



irrorata 214 



kansaaensis 70 



leonensis 330 



magDicostata 308 



iiianiocbi 143 



luoreauensis 14 



mnltilineata 336 



ocoyana 313, 214 



peralveata 308 



planilatcri.s 319 



.spiroTiema 76, 158 



stevensana 40 



striata 321 



svriaca 30S, 210 



uvasana 134, 31 1, 213 



vaiiata 317 



Turrit ellidas 102, 104, 134, 135 



Tylostoma 153 



princeps 153 



U. 



Uintacrinus Q3 



.socialis 93 



Umbonium naua 221 



Umbrella planulata 222 



Unicardium 30 



gibbosam 30 



Unio, 34, 95, 105, 112,135, 136,137,140, 159, 160, 166, 272 



alatoides . 272 



aldrich i 140, 160, 168 



(Bapbia ?) nebrascensis 70 



belliplicatus 66, 112, 160,168 



brachyopirtbus 137, 160, 168 



cariosoides 272 



clinopistbus 166,170 



condoni 1 80 



couesi 139, 160, 168 



cristonensis 88, 167 



cryptorhyncbus 139, 160, 168 



danai 18, 105, 160, 168 



deweyauu.s 18, 105, 160, 168 



endlicbi 139,100,108 



galluien.sis 88 



gODiambonatu.s 140, 160, 168 



goniomrtus 137, 160,108 



haydeui 33, 95, 112,170 



bolmesiauus I:i9, 100, 168 



bubbardii 167 



bumerosoidcs •.'72 



leai 170 



leauus 70 



ligameutinoiues 272 



martini 180 



Page. 



Uuio meeki 139, 159,170 



niendax 139, 168 



nasutoides 272 



nucalis 18,34,167 



peuullimus 167 



potrinus 137 



l)ra?iiodontoides 373 



primaivua 139, 100, 168 



priscus 15, 10.5, 160, 108 



proavitus 139, IGO, 108 



propbeticus 137, 100,108 



radiatoides 272 



rectoidea 373 



roanokoides 272 



senrctus 139, 100, i08 



sbosbonensis 137, 1.59, 170 



stewardi 136, 107 



sulirotuudoidea 272 



.subspatulatus 18, 105, 160, 168 



tfllinoides 170 



terra-riibrJB 88 



vetustus 33, 95, 112, 135, 160, 1C8 



wasbakiensia 70, 150, 170 



UnionidsB 34, 98, 105, 112, 135, 139, 27-' 



Unionopsis 99 



r'pprorrimia 41 



Urosthenea 334 



auatralis 334 



V. 



Valvata 35,107,1.58,162 



? montanaensis 107, lt;2. 169 



naua... 77, 158, 167 



parvula 16,107,162 



.scabrida 1 67 



aubumbilicata 107, 162, 169 



.' (Tropidina) acabrida 35 



ValvatidsB 35, 107 



Vanikora 102, 264 



ambigua 48, 102,264 



diegoana 50, 221 



Vauikorida) 102 



Vanikoropsia 103, 259 



tuomeyana 102, 259 



Vauuxeiuia 54 



dixonenaia 41 



/ dixonenaia 54 



Velatella 134,141,1.58, 161 



"Veleda 269, 271 



eqailatera 371 



lintea 269 



naauta 371 



telinoidea 369 



trauaversa 369 



Veloritina 99,135,137,100 



Venericardia (Caidiocarditea) carinata .'lO 



monilica.sta 50 



aubtenta . .50 



occidentalis . .50 



(Ptcronieria) abbreviata .. .50 



radiana 50 



Venerida) .100, 111, 260, 262, 264, 269, 271 



Venitlla 99,134,264,268,271 



oonradi 99, 268 



deciaa 269 



