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No. Kame. 



301 Unio nicestus Lea. 



302 nitens Lea. 



303 Novi-EboracM Lea. 



304 notatus Lea. 



305 obscurus Lea. 



306 obesus Lea. 



307 obliquus Lam. 



308 occult^us Lea. 



309 ochraceus Say. 



310 ovatus Saij. 



311 oviformis Conrad. 



312 patulus Lea. 



313 paulus Lea. 



314 parvus Barnes. 



315 perplexus Lea. 



316 penitus Conrad. 



317 perdix Lea. 



318 perovatus Conrad. 



319 perovalis Conrad. 



320 personatus Say. 



321 phaseolus Hild. 



322 Phillipsii Conrad. 



323 plicatus Say. 



324 plenus Lea. 



325 pictus Lea. 

 325 pilaris Lea. 



327 pileus Lea. 



328 pyramidatus Lea. 



329 pustulatus Lea. 



330 pustulosus L^ea. 



331 purpuratus Lam. 



332 pumilis Lea. 



333 pusillus Lea. 



334 pro ductus Conrad. 



335 pulcher Lea. 



336 rubiginosus iea. 



337 radiatus Lea. 



338 Rangianus Lea. 



339 Ravenelianus iecr. 



340 rectus Lam. 



341 regularis Zea. 



342 retusus Zea. 



343 Roanokensis Lea. 



344 rotundatus iinn. 



345 rubellus Conrad. 



Locality. 



Tennessee. 



Tennessee. 



Oak Orchard cr., N. ^ 



Cumberland river- 

 Tennessee. 



Yorktown, Va, 



Western rivers. 



Black creek, Florida, 



N. J. & Connecticut. 



Western rivers. 



Alabama. 



OMo. 



Georgia. 



Ohio. 



Ohio. 



Alabama. 



Ohio & Tennessee. 



Alabama. 



Alabama. 



Ohio. 



Ohio. 



Wabash. 



Ohio. 



Ohio. 



Tennessee. 



Tennessee. 



Ohio. 



Ohio. 



Ohio. 



Ohio. 



Western rivers. 



Black river, N. C, 



Georgia. 



Savannah. 



Tennessee. 



Western rivers. 



Lake Champlain. 



Ohio. 



South Carolina. 



South Carolina. 



Tennessee. 



Western rivers. 



North Carolina. 



Louisiana. 



Alabama. 



