Pack. 



Turritella erosa, 113 



— impressa, 113 



— interrupta, .... 112 



Unionid^e. 187 



Unio alatus, 195 



— boydianus, 189 



— cariosus, 193 



— complanatus, 188 



— compressus, 191 



— luteolus, 190 



— nasutus, 191 



— novi-eboraci, 194 



INDEX. 



Page. 



Unio ochraceus, 193 



— radiatus, 189 



— rectus, 195 



— rosaceus, 192 



— tappanianus, 194 



— ventricosus, 190 



Valvata sincera, 119 



— tricarinata, 118 



— unicarinata, ... 118 



— pupoidea, 119 



Velutina laevigata, 154 



— zonata, 154 



271 



Pao«. 



VeneridjE, 215 



Venus elevata, 219 



— fluctuosa, 220 



— gemma, 218 



— inequalis, 219 



— mercenaria, 217 



— mortoni, 219 



— notata, 218 



— preoparca, 219 



Vermetus lumbricalis, ... 116 



Vitrina pellucida, 25 



