CATALOGUE OF UNIOS, ETC. 13 



No. 39. Unio plamis, Bar^P 



e,) Say. 



s, Swainson. 

 i ^ __ i renujssimus, Lea, 



No. 4O. Unio plicatus, Say. 

 c'ostata, Raf. 

 rariplicata, Lam. 

 / undulatus, Desh. 



No. 41. Unio politus, Say. 



subrotundus, Lea. 



No. 42. Unio pustulosus, Lea. 

 verrucosus albus, Hild. 



No. 43. Unio Raiigianus, Lea. 



No. 44. Unio rectus, Lam. 



praelongus, Barnes. 

 latissima, Raf. 



No. 45. Unio rr>-mr^ 



Morsa, Raf. ~ __ 



