INDEX TO HELICES. 



75 



Ouioia Mab. vi, 46; . ix, 157 

 OMPHALINA Eaf. ii, 11, 183. 

 Omphalion Bens, iii, 108; 



[viii, 135 



Omphalodes Pfr. vi, 26 ; ix, 157 

 Omphalophora Dut. . ix, 305 

 Oncopila error for uncopila Hde. 

 Oneataensis Mouss. ii, 119. 

 Onixioraicra Bgt. iv, 240; ix, 319 

 Onslowi Braz. . . ix, 34 

 Onychina Rm. . . ix, 267 

 Onyx Brod. vii, 199 ; . ix, 227 

 Oomorpha Mab. vi, 49; ix, 153 

 Oomorpha Sowb. viii, 269 ; 



[ix, 104 



Opaca Mart, ii, 73. 

 Opaca Shuttlew. ii, 148. 

 Opalina Ad. ii, 201. 

 Opalina Sowb. viii, 42 ; ix, 230 

 Opanica Ant. iii, 67 ; . ix, 26 



Opaoana (Rhytida) Gass. iii, 45. 

 Oparana Beck, . . ix, 23 

 Oparica Auct. iii, 67 ; . ix, 26 



Ophelia Pfr. ii, 211; . ix, 16 

 Ophidermis Agas. . ix, 166 



Ophiodermis Herrm. . ix, 166 

 Ophiogyra Alb. . . ix, 81 

 Ophiospila Anc. . . ix, 166 



Ophiria Pfr. i, 128. 



Opiparus Aust. ii, 101. 



Oppenheimi Greg. . ix, 295 



Oppidi Fag. . . . ix, 257 



Oppilata Morel, iii, 133 ; ix, 74 



Opposita Mouss. iv, 257. 



Oppressa Pse. iii, 78 ; . ix, 6 



Oppressa Shuttlew. ii, 148. 



Opulens West, iii, 20; . ix, 47 

 Oquirrhensis'H.emph. . ix, 50 



Oranensis Mori, iii, 249 ; ix, 249 



Oranica Bgt. . . ix, 324 



Orata Let. ii, 145. 



Orbicula Hutt. not Orb. ix, 209 



Orbicula Orb. i, 251. 



Orbiculata Fer. v, 86 ; . ix, 91 



Orbieulata Wood. . ix, 327 



Orbiculum Tap.-Can. ii, 219. 



Orbignyi W. & B. iii, 237 ; 



[ix, 258 



Orbis Beck, ii, 114. 

 Orbitula Sowb. vii, 179 ; ix, 225 

 Orcella Stol. . . ix, 52 



Orcula Bens, ii, 177; . ix, 52 

 Ordinaria Smith, ii, 164; ix, 41 

 Ordunensis Kob. viii, 161 ; 



[ix, 255 



Oreas Koch, v, 136; . ix, 94 

 Oregonensis Hemph. . ix, 76 

 Oregonensis Lea, . . ix, 199 

 Oreina Fag. . . . ix, 257 

 OREOBBA Pilsbry, . ix, 109 

 Oresigeua Orb. . . ix, 198 

 Oreta Bgt. . . . ix, 251 

 Orgonensis Philb. . ix, 331 



Origiuaria Aust. ii, 100. 

 Orites Westerl. . . ix, 331 

 Oriunda Gass. i, 121 ; . ix, 54 

 Ornata Parr. . . ix, 301 

 Ornatella Beck, ii, 115. 

 Ornatella Pfr. ii, 112. 

 Ornatissima Bens, ii, 95. 

 Orobia Alb. ii, 8. 

 Orobia Bens, ii, 108. 

 Orobcena Anc. . . ix, 7(> 

 Orophea West. . . ix, 2(!<> 

 Orotavana Tarnier, . ix, 258 

 Orphana Hde. . . ix, 44 

 Orphea West. . . ix, 260 

 ORPIELLA Gray, ii, 7, 68. 

 Orsinii (Porro) Villa, iii, 



[203 ; ix, 266 



Orta Paul, iv, 224 ; . ix, 332 

 Orthoeheilis Hde. . ix, 209 



Orthostoraa Pfr. ii, 47. 

 ORTHOSTYLUS Beck, . ix, 227 

 Ortoni Crosse, iii, 127; . ix. 83 

 ORUSTIA Morch. . . ix, 225 

 Orythia Mts. viii, 210 ; ix, 206 

 Osbecki Phil, iv, 59. 

 Oscarensis Cox, viii, 279 ; 



[ix, 131 



Oscari Kim. ii, 159. 

 Oscitans Mts. iv, 47 ; . ix, 204 

 OsculansC. B. Ad. iii, 8; ix, 64 

 Osoriensis Woll. ii, 160. 

 Ossetinensis Bayer. . ix, 304 

 Ossica Bttg. iv, 102 ; . ix, 303 



