Or THE GENUS UXIO. 



99 



Masoni. Con. Augusta, Ga. 

 Mecklenbergensis. Lea. Charlotte, N. C. 

 Medellinus. Lea. Medellin river, Vera Cruz. 

 mediocris. Lea. Neuse river, N. C. 

 medius. Lea. Coosa river, Ala. 

 Menkianus. Lea. Harpeth river. 

 Mercerii. Lea. Lee county, Ga. 

 Meridithii. Lea. Tennessee river, Tuscum- 



bia, Ala. 

 merus. Lea. Abbeville Dist., S. C. 

 metanever. Raf. Ohio river. 

 Mexicanus. Phili. Mexico, 

 micans. Lea. Catawba river, N. C. 

 minor. Lea, Lakes George and Monroe, Fla. 

 Mississippiensis. Con. Lower Missi. river, 

 modicellus. Lea. Connasauga river, Ga. 

 modicus. Lea. Columbus, Ga. 

 modioliformis. Lea. Santee canal, S. C. 

 monodontus. Say. Ohio river. 

 Monroensis. Lea. Lake Monroe, Fla. 

 Mooresianus. Lea. Tuscumbia, Ala. 

 Moussonianus. Lea. Georgia. 

 Miihlfeldianus. Lea. Cumberland river, Tenn. 

 multiplicatus. Lea. Ohio river, Cincinnati, 

 multiradiatus. Lea. Cumberland river, Tenn. 

 mundus. Lea. Tuscumbia, Ala. 

 Murrayensis. Lea. Murray county, Ga. 

 mytiloides. Raf. Ohio river. 

 Nashvillensis. Lea. Tennessee, 

 nasutulus. Lea. Brunswick county, N. C. 

 nasutus. Say. Schuylkill river, Pa. 

 naviculoides. Lea. Buckhead creek, Ga. 

 negatus. Lea. Big Prairie creek, Ala. 

 neglectus. Lea. North Alabama. 

 Neislerii. Lea. Flint river, Ga. 

 Neusensis. Lea. Neuse river, N. C. 

 Newcombianus. Lea. Lake Nicaragua. 

 Nicklinianus. Lea. Tampico, Mex. 

 nigellus. Lea. Chattahoochee river, Ga. 

 nigerrimus. Lea. Alexandria, La. 

 nigrinus. Lea. "West Florida, 

 nitens. Lea. Long creek, Cocke co., Tenn. 

 Northamptonensis. Lea. Connecticut river, 

 notatus. Lea. Cumberland river. 

 Novi-Eboraci. Lea. Oak Orchard creek, N. Y. 

 nubilus. Lea. Paw creek, N. C. 

 nucleopsis. Con. Etowah river, Ga. 



mix. Lea. Alabama river, 

 obesus. Lea. York river, Va., and S. C. 

 obfuscus. Lea. Flint river, Ga. 

 oblatus. Lea. Gaston count}-, N. C. 

 obliquus. Lam. Ohio river, 

 obnubilus. Lea. Buckhead creek, Ga. 

 obscurus. Lea. Nashville, Tenn. 

 obtusus. Lea. Chattahoochee river, Ga. 

 occidens. Lea. Ohio river, Cincinnati, 

 occidentalis. Con. Currant river, Ark. 

 occultus. Lea. Lake Monroe, Fla. 

 ochraceus. Say. Schuylkill river, Pa. 

 Ocmulgeensis. Lea. LittleOcmulgeeriver, Ga. 

 opacus. Lea. Buckhead creek, Ga. 

 orbicularis. Hild. Ohio river. 

 Oregonensis. Lea. Oregon, 

 ornatus. Lea, Alabama? 

 Othcaloogensis. Lea. Othcalooga creek, Ga. 

 ovatus. Say. Ohio river, 

 oviformis. Con. Tennessee, 

 pallescens. Lea. Tuscaloosa, Ala. 

 palliatus. Lea. South Carolina, 

 pallidofulvus. Lea. Cahawba river, Ala. 

 paludicolus. Gould. Florida, 

 papyraceus. Gould. Florida, 

 parvulus. Lea. Coosa river, Ala. 

 parvus. Bar. Ohio river, 

 patulus. Lea. Western Ohio, 

 paulus. Lea, Chattahoochee river, Ga. 

 pauperculus. Lea. Columbus, Missi. 

 Pawensis. Lea. Paw creek, N. C. 

 pectorosus. Con. Elk river, Tenn. 

 pellucidus. Lea. Chattahoochee river, Ga. 

 penicillatus. Lea. Chattahoochee, Ga. 

 penitus. Con. Alabama river, 

 perdix. Lea. Harpeth river, Tenn. 

 perovatus. Con. Greene county, Ala. 

 perovalis. Con. Alabama river, 

 perplexus. Lea. Ohio river, 

 percoarctatus. Lea. Catawba river, N. C. 

 perlatus. Lea. Cape Fear river, N. C. 

 perlucens. Lea. Sampson county, N. C. 

 permiscens. Lea. Tombigbee river, Miss, 

 pernodosus. Lea. North Carolina, 

 perpastus. Lea. Coosa river, Ala. 

 perpictus, Lea. Bull river, Tenn. 

 perplicatus. Con. Jackson, La. 



