1! 



ALPHABETICAL LIST. 



nodulosa, Dohrn, 302* 

 nodulosa, Lea, 200. 

 (novse-zelandise, Fischer), 153. 

 novcB-zelandice, Keeve, 152.* 

 uubila, Reeve, 11, 12. 

 nucleus, Lam., 190. 

 nnpera, Say, 206. 

 nuttalliana. Lea, 59. 

 nux, Reeve, 3.* 



oahuensis, Brot, 235. 

 oheliscus, Palad., 47. 

 obeliscus, Rec, 81.* 

 obesa, Phil., 292.* 

 obesa, Phil, 295.* 

 obesa, Sow., 142. 

 obesus, H. Adams, 124. 

 obliquigrauosa. Smith, 273. 

 obliquus, A. Adams, 177. 

 oblonga, Desmarest, 102. 

 ohlonga, Nev., 11. 

 obovata, Say, 205. 

 ohscurata, Desh., 22. 

 obsoleta, Partschl., 87. 



obtiisa, Lea, 49. 



obtusa, Nev., 35.* 



ohtusa, Troschel (not Reeve or C. 

 I.), 25,* 29* 



obtusata, L., 135, 136. 



obtusatus, riiil,, 176.* 



(Odostomia), 133, 



olea, Reeve, 4.* 



oUvacea, 27. 



oUvacea, A. Adams, 44. 



(oUvacea, Sow.), 13. 



olivaria, Lea, 196. 



olivula, Courad, 199. 



Omphaloteopis, 70, 71. 



omphalotropis, A. Adams, 171. 



(Oncomelania, Gredler), 219. 



Onoba, H. and A Adams, 97- 119.* 



opaca, Zgl., 54. 



Optidicebas, Leith, 65, 66, 67. 



orhata, Morch, 1. 



(orbignyana), 89. 



orbignyana, Phil., 139. 



orbignyi, A. Adams, 92. 



orcula, B., 36, 37.* 



oregonensis, Tryon, 201* 



orientalis, Nev., 41. 



orientalis, Nev, 82.* 



orientalis, PLil., 5.* 



orissaensis, Nev., 243. 



ornata, 136. 



ornata, B., 289.* 



ornata, BL, 97. 



ornata Mor., 58. 



ornatus, Poey, 215. 



orsinil, Charp., 40. 



(orthochila, A Adams,) 178. 



oryza, Garrett, 95. 



(oualanensis, Mouss.), 280. 



oualanensis. Pease, 280. 



ovalana, Mouss., 232, 



ovata, Oliv., 8. 



ovata. Pease, 70. 



(ovoidea, Gould), 171. 



ovum, Trosch., 14. 



oxytropis, B., 22.* 



P 



Pachychilus, Lea, 268.* 



Pachydeobia, Crosse and Fischer, 

 62. 



'pachylahris, Nev, 92. 

 pagoda, 278. 



