CONTENTS, reason of ^^islss 

 Secfional Uteots 



V* 



Papers by Thomas Bland. 



PAGE 



Descrii^tion of Two New Species of North American Helicid^, . . 1-4 



Helix Edvardsi, 1 



" sculptilis, 3 



Remarks on Certain Species of North American Helicid^, in Three Parts: 



Part I., with Contents prefixed, 1-53 



Part II., " " 65-95 



Part III., " " 97-116 



Note on the Toothed Helices of North America, 11*7 



Note on Variation in Species of Helix in Eastern North America, . . 123 



List of Figures on Plate IX., Ann. of Lyceum, Vol. VI., .... 26 



List of Figures on Plate IV., Ann. of Lyceum, Vol. VII., . . . 125 

 On the Geographical Distribution of the Genera and Species of Land 

 SuELLs of the West India Islands, with a Catalogue of the Species 



of each Island, pp. 35 



Paper by T. Bland and J. G. Cooper. 



Notice of L.\ND and Freshwater Shells collected by De. J. G. Cooper in 



the Eocky Mountains, etc., in 1860, pp. 9 



New Species Described : 



Helix Mullani, p. 2 



" polygyrella, p. 4 



