34 INDEX TO PLATES. 



" H. rhodocheila " on the plate.) Varieties ?, i, f^, '. 

 p. 123. 



PLATE XLVII. 



Helix polychkoa Biiiney, (" H. rhodocheila," erro- 

 neously.) Varieties, «, (?, /, S, f. p. 124. 



PLATE XLVIIL 



Fig. 1. Helix lineata Say, p. 261 ; (in text, pi. 68.) 

 Lingual hooklets, p. 262. 



Fig. 2. Helix selenina Gould, (in the text, pi. 

 29 a, f. 2,) p. 240. 



Since the printing of the text, a description of this shell 

 by Dr. Binney, under the name of If. tenuistriata, has been 

 discovered on the cover of the Boston Journal of Natural 

 History, Vol. IV. No. 1, 1842. It appears also to be iden- 

 tical with H. vortex PfeifTeiv (1839,) of several West India 

 Islands. 



Fig. 3. Helix multidentata Binney, (in text, pi. 

 68,) p. 258. 



The cut following the description represents the lingual 

 hooklets of H. lahyrinthica. 



PLATE XLIX. 



Helix Berlani>eriana, Mori can d. Figures 1, 2. 

 Dr. Binney has indicated a shell under the name H. alho- 

 lineata, which can be nothing else than a variety of this 

 multiform species, p. 109. 



PLATE L. 



Fig. 1. BcLiJius decollatcs Lin. p. 280. 

 Fig. 2. BuLiMus sKRPEKASTRrs Say, p. 274. 



