42. P. Tayloriana, Ch. 



43. P. Stricklaudiana, Ch. 



44. P. Stokesiana, Ch. 



169 



45. P. Grevilleana, Ch. 



46. P. Carpenteriana, Ch. 



47. P. (? Lewisia) Barroniana, Ch. 



Gen. Lindsleya, Chitty. 



48. 



L. Lindsleyana, Ad. 



61. 



L. Gaskoiniana, Ch. 



49. 



L. Pickeringiana, Ch. 



62. 



L. Newcombiana, Ch. 



50. 



L. Redfleldiana, Ad. 



63. 



L. Russeana, Ch. 



51. 



L. Jayana, u4o?. 



64. 



L. Poeyana, Ch. 



52. 



L. Leana, Ad. 



65. 



L. Henry ana, Ch. 



53. 



L. Denisoniana, Ch. 



66. 



L. Alderiana, Ch. 



54. 



L. Polyblankiana, CA. 



67. 



L. Bridgesiana, Ch. 



55. 



L. Albersiana, Ch. 



68. 



L. Salleana, Ch. 



56. 



L. Fischeriana, (7A. 



69. 



L. Artburiana, Ch. 



57. 



L. Moricandiana, Ad. 



70. 



L. Gutiereziana, Ch. 



58. 



L. Reeveana, Ch. ' 



71. 



L. Oweniana, CA. 



59. 



L. Shuttleworthiana, CA. 



72. 



L. "Wollastoniana, Ch 



60. 



L. Boissieriana 3 Ch. 









Gen. Blandia 



, Cbitty. 



73. 



B. Blandiana, Ad. 



78. 



B. HilHana, Ch. 



74. 



B. Jeffreysiana, Ch. 



79. 



B. Trailliana, CA. 



75. 



B. Bairdiana, CA. 



80. 



B. Lukesiana, Ch. 



76. 



B. MacGillivrayana, Ch. 



81. 



B. Loweana, Ch. 



77. 



B. Troscheliana, CA. 







Genus I. Lewisia, Chitty. 

 Quasi double-mouthed. 



Lewisia Agassiziana, Chitty. See Stoastoma Agassisianum, 

 Ad. Cont. Conch, p. 158 ; Cat. Phan. p. 234. 



The habitat of this shell is near Ackendown, Westmoreland. The 

 " deposit," of which Adams speaks, is still remaining in one of my 

 specimens (the original type), and beyond a doubt is the operculum, 

 like many others I shall describe. It is so fixed in the aperture, 

 that I will not risk its breakage in removal, and so I cannot fully 

 describe it. It is excessively concave in its centre, continued on the 

 labial side in a long, broad, smooth, shining convex plate, shaped 

 like a tongue, and extending almost and sinking into the opposite 

 extreme of " the spiral lamella excessively developed and soldered," 

 &c, as described by Adams. 



Lewisia Philippiana, Chitty. See Stoastoma Philippianum, 

 Ad. Cont. Conch, p. 158 ; Cat. Phan. p. 235. 



Opercidum, still 



Hah. Burnt Hill, near Ackendown, Westmoreland, non Acken- 

 down. 



