CATALOGUE OF UNJOS, ETC. 7 



No. 14. Unio cuneatus, Barnes, 

 nigra, Raf. 



No* 15. Unio dehiscens, Say. 

 oriens, Lea. 



No. 16. Unio donaciformis, Lea. 



zig-zag, Lea. 



/ No. 17. Unio ebenus, Lea. 

 No. 18. Lnio elegans, Lea. 

 No. 19. Unio ellipsis, Lea. 



No. 510. Unio flavus, Kaf. 



rubiginosus, Lea. 

 trigonus? Lea. 



No. 21. Unio flexuosns, (male,) Hat*. 

 foliatus, (female,) Hildreth. 



No. 22. Ullio f ragosus, Conrad. 



