CONTENTS. 



Family HELICID^: (subfamily Acavince, or Macroogona.) . . 1 



Bulimus vs. Strophocheilus 2 



Genus Strophocheilus Spix 5, 194 



Subgenus Borus Albers 10, 194 



Subgenus Dryptus Albers 37 



Subgenus Thaumastus Albers 43, 198 



Family BULIMULID^E 62 



Genus Plekoclieilm Guilding 62, 198 



Subgenus Eurytus Albers 69 



Genus Auris Spix (Pachyotus of authors.) 95 



Subgenus Otostomus Beck. . . 107 



Subgenus Eudolichotis Pilsbry 108 



Subgenus Gonyostomus Beck 121 



Genus Bulimulus Leach 125 



General classification of the Bulimuli . . 126 



Subgenus Bostryx Trosch. (Bulimuli with smooth apical 



whorls. South American.) 127 



Section Platybostryx Pilsbry 129 



Section Ataxus Albers 130 



Section Bostryx Troschel 133 



Section Teruesa H. & A. Adams 134, 200 



Section Geopyrgus Pilsbry 135, 200 



Section Geoceras Pilsbry 136 



Section Peronseus Albers 138 



Section Lissoacme Pilsbry 1 54 



Dates of Publication, parts 37-40 200 



Reference to Plates 201 



Index to Genera, Subgenera, etc 213 



[NOTE. The remaining subgenera of Bulimulus will be included in 

 Volume XI of the MANUAL.] 



(iv) 



