NORTH AMERICAN CONCHOLOGT. 



15Y 



Page 





Page 



5 



Unio circulus Lea. 

 U. lens Lea. 



9 





subrotunda? Raf. 



9 



5 



clavus Lam. 







U. scalenia Raf. 



9 





patulus Lea. 





5 



compressus Lea. 



Si/wph. compressa Lea. 



11 



5 



Cooperianus Lea. 



11 



5 



cornutus Barnes. 





5 



crassus Say. 



U. ellipsaria Raf. 



11 





ellipticus Barnes. 



11 





carinatus Barnes. 



11 





lirjamentina Lam. 



11 



5 cylindricus Say. 



U. naviformis Lam. 

 solenoides Raf. 

 7 cuneatus Barnes. 



U. nigra Raf. 

 7 dehiscena Say. 



U. oriens Lea. 

 7 donaciformis Lea. 



U. zij-zag Lea. 

 7 ebenus Zea. 



7 elegans Zea. 



7 ellipsis Lea. 



7 flavua i?a/. 



C/'. ruhi (jinosus Lea. 

 trlrjunus? Lea. 

 7 flexuosus 7ia/. (male). 



6'. foliatus Ilild. (female). 

 7 fragosus C'onr. 



9 gibbosus Barnes. 



U. nasulus Lam. 

 dilatata Raf. 

 arctior Lea (white 



nacre). 

 9 glans Zert. 



9 gracilis Barnes. 



Sympli. (jracilis Lea. 

 9 iris Z^a. 



t/'. subroslratus? Say. 

 9 irroratus Zea. 



U. sfpgarial Raf. 



11 

 11 

 13 



13 



13 



13 



13 

 13 



13 

 15 



TJnio laevissimus Lea. 



Symph. Ixvissima Lea. 

 lapillus Say. 



U. fabalis Lea. 

 monodontus Say. 



U. soleniformis Lea. 

 multiradiatus Lea. 

 U.fasciola^ Raf. 

 nodosus Barnes. 



U. metanevra? Raf. 

 nodulatus JRaf. 



U. pustulatvs Lea. 

 ovatus Say. 

 parvus Barnes. 

 perplexus Lea, 



U. gibbosa ? Raf. 

 personatus Say (female). 

 U. capillaris Lea (fern.) 

 pileits Lea (male). 

 phaseolus Hildr. 

 U. planulatus Lea. 

 camelus Lea. 

 planus Barnes. 

 U. leptodon Raf. 



velum Saj (female). 

 Anod purpiirasccnsSvf ain. 

 U. ienuissimus Lea. 

 plicatus Say. 

 U, costata Raf. 

 rarijilicuta Lam. 

 unduhtlus Desh. 

 politus Say. 

 • U. subrolundus Lea. 

 pustulosus Lea. 



U. verrucosus albiis Hild. 

 Rangianus Lea. 

 rectus Lam. 



U. ])raclongus Barnes. 

 lalissima Raf. 

 retusus Lavi. 

 U. lorsa Raf. 

 rugosus Barnes. 

 U. quadrula? Raf. 

 lachrymosus Lea. 

 asperrimus Lea. 



