CATALOGUE OF UNIO8, ETC. 17 



No. 53. UlliO imdatus, Barnes, 

 caridiacea, Say. 

 mytiloides, Raf. 

 obliqua, Lam. 

 pyramidatus, Lea. 



No. 54. Unio tJHppMp r Barnes - 



Say. 

 multiplicatus, Lea. 



No. 55. Unio ventricosus, Barnes, 

 cardium? Raf. 

 occidens, (female,) Lea. 

 / subovatus, (male,) Lea. 



Mo. 56. Unio verrucosus, Barnes. 



tuberculata, Raf. 

 graniferus, Lea. 



Xo. 5*7. Alasmodoiita antbigua, Say. 



Unio Hildrethianus, Lea. 



No. 5S. Alasmodoiita calceola, Lea. 



deltoidea 1 ? Lea. 

 Unio calceola, Lea. 



