Heiix. 



151 

 152 

 153 



Louisiana. 



Am. septr. 



(Dsedalochila Bk.) 

 1 auriculata Say. 



(Tridopsis Raf.) 

 1* fraterna Say. 



H. convexa Rf. p Pfr. 

 2* hirsuta Say. 

 1* personata Lam. 

 1* fallax Say. 

 1* palliata Say. 

 1 obstricta Say. — 



1 thyroidus Say. — 



1* albolabris Say. — 



2* major Binney. — 



Polygryratia Oray. Opfiiogyra i%lb 



Germania. 

 Am. sept. 

 Ohio. 



