PLATE XXXII. 



Pa£© 



Unio hectoibes Whitfield 25(i 



Fig. 1. Caidiual view of the tjpe. 

 2. Eight side of the type. 

 Unio cariosoldes Lea 247 



Fig. 3. View of the right side of the type epecimeu. 

 Unio ligamentinoides Lea 249 



Fig. 4. Eight side of a specimen identified with this species. For figure of Mr. Lea's type 

 see Plate XXXI, Fig. 1. 

 Unio subrotundoides Lea 246 



Fig. 5. View of the left side of Mr. Lea's type. 



332 



