Jin atiempt to exhibit a aynonymy of the Western^ North 

 American species of the genera Unio and Jllasmodonta. 



UNIO. 



1 U. nignr, Rafineeque.* 



cuneatui--, Barnes. 



2 U. cariosus, S. Lam. B. 



viridis, Raf. 

 eiliquoides, B. (var.) 

 radiatus 1 Gm. 



3 U. fascialus, Raf. 



carinatus, B. 



A U. leptodon, Raf 

 planus, 15. 



purpurescens, Swainson. 

 tenuissimiis. Lea. 



5 U. fragilis, R.Sw. Deshayes. 



gracilis, B. Hildr. Lea. Eaton. 



6 V . nervosus, R. 



zigzag. Lea. 

 doaaciformis, Lea. 



7 U. ItEvigatup, R. 



castaneus ? Lea. 



fi. U. rectus. Lam. Valenc. Eaton. 

 latissimus, R. 

 prslongus, B. Hildr. 



9 U. dilatatns, R. 

 nasutus. Lam. 

 gibbosus, B. Hildreth. 



10 U. cylindricus, S. B. Hildr. [Desh. 



naviformis. Lam. Blainv. Valenc. 

 6olenoide3, R, 



11 U. cardium, R. 



ventricoBUP, B. 

 orcidens. Lea. 

 Bubovatus, Lea. (var.) 

 capax, Green, (var.) 



14 U. alatus.S. Lam. B. Hildr. Desh. 



megapterus, Raf. [Eaton. 



15 U. triquerer, Raf. 



triangularis, B. Hildr. Eaton 

 cunealus, Sw. 

 formosus, Lea. (var) 



16 U. truncatus, R. 



undatus, var. a Barnes. 

 elegans, Lea. 



17 U. inierruptus, R. 



brevidens, Lea. 



18 U. lineolatus, R. 



depressus, R. (young) 

 securis, Lea. Desh. 



19 U. ellipsarius, R. 



ellipticus, B. 

 erassus, S. 



20 U. fasciolaris, R. 



crafiFus, Wood ! 

 ponderosus, Gray ' 

 mucronatue, (young) B- 

 phaseolus, Hildr. S. 

 planulatus, Lea. 



21 (J. verrucosus, R. 



tuberculatum, B. Hildr. 



22 II.flavus.R. 



rubiginosus, Lea. 



23 U. cyphius, R. 



xsopus, Green. 



24 U. metancvnis, R. 



nodosum, B. Hildr. 



25 U. reflcxus 11. 



cornutus, 15. 



12 IJ. ovatus, S. La:n. B. Hildr.Valcnc 26 U. retusus, R. 



stapes ? Lea. (var.) 



13 U. fasciolup, R. 



niultiradialuB, Lea. 27 U. flexuosiis, R. 



pileus, Lca.l 



"Iks writer a ul some others imitated Lamarck in giving the specific ni m« 

 :s genui a fe uini.ie tcrsninalion, v/iiich we hive chinged in this tabic . 



