INDEX TO PLATES. 27 



PLATE XI a. 



Helix bucculenta Gould. 



By some unfortunate arrangement of the copy, the de- 

 scription of this species was wholly omitted in the text. It 

 is incidentally alluded to on pages 91 and 109. The omis- 

 sion may be partly remedied by the insertion of the descrip- 

 tion here. See page 9. 



PLATE XIL 

 Helix dentifera Binney, p. 134. 



PLATE Xin. 

 Helix api'ressa Say, p. 140. 



PLATE XHI a. 



Helix divesta Gould. This species appears in the 

 text, under the name of H. abjecta, which name had been 

 previously employed by Lowe (Fauna Maderensis) for a 

 Jladeira shell. The above name is therefore substituted. 

 On page 135, at the bottom, for abjecta read divesta. p. 122. 



PLATE XIV. 



Helix palhata Say, with the animal. The lingual 

 booklets following the description, page 139, are those of 

 Tebennophorus Carolinetisis. p. 136. 



PLATE XV. 



Helix palliata Say, the carinatt, variety, ( Caracolki 

 helicoides, Lea.) p. 138. 



