262 BOCJRQuicirvAT. 



Hydrobia Ammonis, Martens. . . . • 50 



— Caledonensis, Chaper 50 



— ciliata, Gould 49 



— erythrea, Martens 51 



— Schweinfurthi, id 50 



— tristis, Morelet 50 



Joubertia (nov. genus, 1888), Bourguignat 174 



— Baizeana, id. 174 



— spinulosa, id. 175 



— Slanleyana, id. 176 



Lacunopsis zonata, Crosse 63 



Lavigeria (nov. genus, 1888), Bourguignat. 178 



— callista, id. 183 



— combsa, id. 189 



— coronata, id. 180 



— diademata, id. 179 



— grandis, id, 182 



Jouberti ; id. 185 



— pereximia, id. 187 



— Ruellaniana, id. 190 



Leroya (nov. genus, 1887), Grandidier 78 



— Bourguignati, id 79 



Limnœa (Lymnœa), Bruguières, 1791 5 



— Africana, Ruppell 10 



— Alexandrina, Bourguignat 8 



— Debaizei, id. H 



— Jouberti, id. 7 



— Laurenti, id. 7 



— Lavigeriana, id. 9 



— Natalensis, Smith 6 



Limnotrochus (nov. genus, 1880), Smith 134 



— Cyclostoma, Bourguignat 138 



— Giraudi, id. 137 



— Kirki, Smith 135 



— Thomsoni,'id 136 



Lithogiyphus zonatus, Woodward 63 



— neritoides, Smith 246 



— rufofîlosus, id 86 



Meladomus, Swainson, 1840. . 76 



— Jouberti, Bourguignat 76 



— sinistrorsus, id. 78 



Melauia Lamarck, 1799 163 



— admirabilis, Bourguignat 164 



