NORTH AMERICAN CONCHOLOGT. 



2n 



[Witli this number appeared "An attempt to exhibit a Synonymy of the 

 Western North American species of the genera Unio and Alasmodouta." 

 The list is here given, the paging referring to the reprint. — W. G. B.] 



Page. No. 



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1 TJnio niger Raf. 



U. cuneatus Barnes. 



2 cariosus Say. 



U. viridis Raf. 



siliquoides B., var. 

 radiatus? Gmel. 



3 fasciatus Raf. 



U. carinatus Barnes. 



4 leptodon Raf. 



U. planus Barnes. 

 purpurescens Sw. 

 tenuissimus Lea. 



5 fragilis Raf. 



U. gracilis Barnes. 



6 nervosus Raf. 



U. zig-za(j Lea. 



donaciforniis Lea. 



7 laevigatus Raf. 



U. rasOtneus? Lea. 

 rectus Lam. 



U. latissimus Raf. 

 pnclongus Barnes, 

 dilatatus Raf. 

 U. nasuttts Lam. 

 gihboam Barnes. 

 cylindricus Sa;/. 

 U. naviforviis Lam. 

 solenoides Raf. 

 cardium Raf. 



U. vrntrirosusJia.rDea. 

 occidens Lea. 

 suhovatus Lea, var. 

 capax Green, var. 

 ovatus Saif. 

 fascioluB /■'')/. 



U. iiiultiradiatus Lea. 

 alatUB Sat/. 



U. mcgapterun Raf. 



triqueter Raf. 



U. triangularis Bar. 

 cuneatus Sw. 

 formosua Lea, var. 



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No. 

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Unio truncatus Raf. 

 U. undatus B., var. a. 

 elegans Lea. 

 interruptus Raf. 

 U. brevidens Lea. 

 lineolatus Raf 



U. depressus R., y'ng. 

 securis Lea. 

 ellipsarius Raf 

 U. ellipticus Barnes. 

 crassus Say. 

 fasciolaris Raf. 

 U. crassus Wood ? 

 ponderosus Gray. 

 mucronatus Barnes, 

 young. 

 phaseolus Hildr. 

 planulatus Lea. 

 verrucosus Raf 



U. tuherculatus Bar. 

 flavus Raf 



U. ruhiginosus Lea. 

 cyphius Raf 



U. yEsopus Green, 

 metanevrus Raf 



U. nodosus Barnes. 

 reflexus Raf. 



U. coriiutus Barnes. 

 retusus Pxaf 



U. stapes I Lea, var. 

 flexuosus Raf 

 U. pihms Lea ? 

 nodulatus R<f. 



U. puslulatus Lea. 

 quadrulus /'"/. 

 U. rugosus Barnes. 

 lachri/mosus Lea. 

 asjifrrimiis Lea. 

 nodulosus Wood. 

 U. hullutus Barnes. 

 verrucosus B., var. 



