52 



u N I o . 



OBLONG. 



*cicur. Lea. 

 *cistell£eformis. Lea. 

 *Orontesensis. Lea. 

 *Livmgstonensis. Lea. 

 *Hallenbeckii. Lea. 

 *errans. Lea. 

 *Daniascensis. Lea. 

 *vicinus. Lea. 

 "•*virens. Lea. 

 *opacus. Lea. 

 *Catawbeiisis. Lea. 

 *viridicatus. Lea. 

 *fuinatus. Lea. 

 ■^rostrum. Lea. 

 *hepaticus. Lea. 

 *siibniger. Lea. 

 *8equatus. Lea. 

 "subflavus. Lea. 

 *siinilis. Lea. 

 *nigellus. Lea. 

 *denigratiis. Lea. 



( OBLONG. 



*Ka(^ensis. Lea. 



*salebrosus. Lea. 



*Uhar^ensis. Lea. 



*viridans. Lea. 



*subinflatus. Co7i. 



*Abbevillensis. Lea. 



*Ealeighensis. Lea. 



*Beaverensis. Lea. 



*aberrans. Lea. 



*Orpliaensis. Lea. 



cultelliforniis.' Con. 

 Unio depressus. Con. Not Lam. 



*syminetricus. Lea. 



limatulus. Con. 

 *Buddianus. Lea. 



Stuarti. Ad. & An. 

 *lutulenti"is. Qould. 

 ^Griffithianus. Lea. Han. 

 *rQediocris. Lea. 

 *Valentinus. Rossm. Bourg. 



Zelebori. Fraun. 



■ Unio cultelUformis is described as coining from Australia. It is so much like one of our varieties 

 of complanatus, that I am induced to believe that some error of locality must have occurred. In a sub- 

 sequent paper (Jl. A. N. S., v. 2, p. 295), Mr. Conrad makes cultelUformis a sj'nonym to U. depressus, 

 Lam., which he also describes and figures, pi. 26, f. 2; but I think that cultelUformis should rather be 

 considered a synonym to complanatus, if it be not a true species, of which I have expressed a doubt 

 above. 



