— 164 — 
nov.), Bridouxiana (spec. nov.), pyramidalis (spec. 
nov.); Hors (nov. gen.), tanganikana (spec. nov.); 
MeLania tuberculata, admirabilis ; BourauiGnarTrA Bri- 
douxi (spec. nov.), Jouberti (spec. nov.), imperialis ; 
RanNDABELIA catoxia (spec. nov.), Hamyana; Jouserria 
(nov. gen.) Baizeana, spinulosa, Stanleyana ; Lavicerra 
(nov. gen.) diademata (spec. nov.), coronata (spec. 
nov.), grandis, callista (spec. nov.), Jouberti (spec. 
nov.), pereximia (spec. nov.), combsa (spec. nov.), 
Ruellaniana (spec. nov.); Epcaria (nov. gen.) pauei- 
costata, callopleuros, Monceti (spec. nov.), littoralis 
(spec. nov.); ParameLania Damoni, crassigranulata, 
infralirata (spec. nov.), egregia, obtusa (spec. nov.), 
Duveyrieriana, Ledoulxiana, formosa (spec. nov.), 
Cameroniana, singularis (spec. nov.), Bourguignati, 
Reymondi, timida (spec. nov.), Milne-Edwardsiana, 
Lessepsiana, palustris (spec. nov.), Grandidieriana, 
nassatella (spec. nov.), lacunosa (spec. nov.), Randa- 
belt (spec. nov.), nassa, Smithi (spec. nov.), venusta 
(spec. nov.), Mabilliana (spec. nov.), Livingstoniana, 
nassatiformis (spec. nov.), limnæa (spec. nov.), pul- 
chella, elongata (spec. nov.), Giraudi, Locardiana, 
crassilabris, bythiniformis (spec. nov.), Servainiana, 
arenarum {spec. nov.); STANLEYA neritoides ; COULBOISIA 
(nov. gen.) Giraudi, Smithiana; Rumezra globosa 
(spec. nov.), callifera (spec. nov.), Milne-Edwardsiana, 
Giraudi, Jouberti (spec. nov.), Lavigeriana(spec.nov ). 
GraxpinierIA elongata, Giraudi, mira, callista (spec. 
nov.), rhynchonella {spec. nov.), Servainiana, Horei, 
insignis, rotundata, Burtoni, Smithi, Anceyi, cyre- 
nopsis, Hauttecœuri, singularis (spec. nov.), Thom- 
soni, Ujijensis, corbicula, incarnata, granulosa, Bour- 
guignati (spec. nov.), tanganikana, Locardiana, gravi- 
dæ, rostrata ; Corsicuzatanganikana ; Pisinrum Giraudi, 
