324 Bulletin American Museum of Natural History [Vol. LIII 
JouBERTIA Bourguignat 
Joubertia BourcuiIGNat, 1888, ‘Iconogr. Malacol. Tanganika,’ p. 32; 1890, 
Ann. Sc. Nat. Zool., (7) X, p. 174. Type by present designation: Paramelania 
baizeana Bourguignat. 
Joubertia baizeana (Bourguignat) 
Paramelania baizeana BoureuiGnat, 1885, ‘Notice Prodrom. Moll. Giraud 
Tanganika,’ p. 74. 
Joubertia baizeana BouRGUIGNAT, 1888, ‘Iconogr. Malacol. Tanganika,’ Pl. x111, 
figs. 5-7; 1890, Ann. Se. Nat. Zool., (7) X, p. 174, Pl. x1, figs. 5-7. E, A. Smirs, 
1904, Proce. Malacol. Soc. London, VI, 2, p. 88. Ancry, 1907, Bull. Scientif. France 
et Belgique, (5) IX, (1906), p. 251. 
Lake Tanganyika: Kapampa on the southern shore dive locality). 
Joubertia spinulosa (Bourguignat) 
Paramelania spinulosa BourauienaT, 1885, ‘Notice Prodrom. Moll. Giraud 
Tanganika,’ p. 75. 
Joubertia spinulosa oe 1888, ‘Iconogr. Malacol. Tanganika,’ Pl. 
x1, figs. 8-10; 1890, Ann. Se. Nat. Zool., (7) X, p. 175, Pl. x11, figs. 8-10. E. A. 
SmitrH, 1904, Proc. Malacol. Soc. London, VI, 2, p. 88. Ancry, 1907, Bull. Scientif. 
France et Belgique, (5) TX, (1906), p. 251. 
Paramelama (Joubertia) spinulosa Bourguignat. E. v. MARTENS, 1897, ‘Deutsch 
Ost Afr., IV, Beschalte Weichth.,’ p. 207. 
Lake Tanganyika: Mlilo, on the southern shore (type locality). 
Joubertia stanleyana (Bourguignat) 
Paramelania stanleyana BourGuienat, 1885, ‘Notice Prodom. Moll. Giraud 
Panganika,’ p79. 
Joubertia stanleyana BourauicNnat, 1888, ‘Iconogr. Malacol. Tanganika,’ PI. 
Kil, 183,-11-12; 1600, Ann. oc, Nat. Zool, (7) XxX, p, 176; Pl. x1 fies, 11-12. FE. A. 
SmirH, 1904, Proc. Malacol. Soc. London, VI, 2, p. 88. Ancry, 1907, Bull. Scientif. 
France et Belgique, (5) TX, (1906), p. 251. 
Lake Tanganyika: Mlilo and Pambete, on the southern shore (type locality not. 
designated). 
LAVIGERIA Bourguignat 
Lavigeria Bourcuienar, 1888, ‘Iconogr. Malacol. Tanganika,’ p. 33; 1890, 
Ann. Sc. Nat. Zool., (7) X, p. 178. Type by present designation: Tiphobia nassa 
var. grandis E. A. Smith.  - 
Nassopsis KE, A. Smiru, 1890, Ann. Mag. Nat. Hist., (6) VI, p. 93. Monotype 
Nassopsis nassa var. grandis E. A. Smith. 
This: genus is characterized chiefly by the basal nucleus of the 
operculum (Fig. 56c) and the relative shortness of the side teeth of the 
radula, the inner marginal having but three cusps. - 
