52 



usio. 



go 



W 



y. 

 o 



■ — 



v. 

 u 



Eh 



o 



P* 



s 



(5 



O 



OBLONG. 



*cicur. Ze«. 

 *cistellaeformis. Leei. 

 *Orontesensis. Lea. 

 *Iivingstonensis. Lea. 

 *Hallenbeckii. Lea. 

 *errans. Lea. 

 *Damascensis. Lea. 

 *vicinus. Lea. 

 *virens. Lea. 

 *opacus. Lea. 

 *Catawbensis. Lea. 

 *viridicatus. Lea. 

 *fumatus. Lea. 

 *rostrum. Lea. 

 *hepaticus. Lea. 

 *subniger. Lea. 

 *a?quatus. Lea. 

 *subfiavus. Lea. 

 *similis. Lea. 



*nigellus. Lea. 



*deni<rratus. Lea. 



O 



s 



w 



E-i 



O 



f OBLONG. 



*Eaeensis. iea. 



*salebrosus. Zea. 



*Uhare'ensis. Lea. 



*viridans. Lea. 



*subinflatus. Con. 



*Abbevillensis. Lea. 



*Raleigbensis. Lea. 



*Beaverensis. Lea. 



*aberrans. Lea. 



*Orphaensis. Lea. 



cultelliformis. 1 Con. 

 Unio depressus. Con. Not Lam. 



*symmetricus. Lea. 



limatulus. Con. 

 *Buddianus. Lea. 



Stuarti. Ad. & An. 

 *lutulentus. Gould. 

 *Griffithianus. Lea. Han. 

 *mediocris. Lea. 

 *Valentinus. Rossm. Bourq. 



Zelebori. Fraun. 



1 Unio cultelliformis is described as coming 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 (.11. A. N. S., v. 2, p. 295), Mr. Conrad makes cultelliformis a synonym to U. depressus, 

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

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

 above. 



