CATALOGUE OF UNIOS, ETC. 7 



So* 14. UuiO cuneatus, Barnes, 

 nigra, Raf. 



No, 15. Unio dehiscens, Say. 

 oriens, Lea. 



No, 16. llnio douaciformis, Lea. 

 zig-zag, Lea. 



No. 17. Unio ebenus, Lea. 



No. IS. Unto elegans, Lea. 



No. 19. Uaio ellipsis, Lea. 



No. JiO. Unio flavus, Kaf. 



rubiginosus, J^ea. 

 trigonus] Lea. 



No. 541. Unio flexuosus, (male,) Rat. 

 foliatus, (female,) Hildreth. 



No. 22. Unio Iragosns, Conrad. 



