246 MELANIIDSS. 
var, pseudo-truncatula, nov. 
Brot, Conch.-Cab., IT, 1874, pl. 26, fig. 11F. 
4 Mauritius ; coll. J. Caldwell, Esq. 
12 Bourbon ; coll. G. Nevill, Esq. 
Resemble fairly M. Brot’s above-quoted figure; rather 
smaller. . 
1 Locality ? ; exc. Dr. F. Stoliczka, 
A remarkable form, perhaps distinct. 
var. @pPpressa, nov. 
2 Mauritius ; coll. J. Caldwell, Esq. 
Much contracted, spire elongately drawn out, columella 
characteristically twisted backwards, very slightly decollate ; 
long. 293, diam. 9 mil. 
No longitudinal sculpture, the spiral keels acute. 
33. Melania [Striatella] gemmulata. 
Melania gemmulata, Reeve, Icon., 1859, fig. 86, Hab. ? 
2 West Indies? ; ex c. G. Nevill, Esq. 
34. Melania [Striatella] fontinalis.| 
Melania fontinalis, Philippi, Abd. ITT, 1851, “ Pulo Pinang, in aqueducti- 
bus” [not of Brot]. 
6 Penang; coll. Dr. F. Stoliczka. 
Anfr. 6; long. 26, diam. 9} mil, Throughout irregularly 
and acutely, spirally striate, strie markedly more prominent 
towards the apex, without any longitudinal sculpture either in 
the adult or young forms. Of very sombre, uniform color- 
ation ; rather strongly decollate. Spire more produced ; whorls 
less convex than in Philippi’s figure: M. Brot figures as 
M., fontinalis some quite different species, longitudinally promi- 
nently ribbed—a character that exists neither in Philippi’s de- 
scription nor figure. I fancy it will prove not separable from the 
Javanese M. rivularis, which Philippi,indeed, himself suggested ; 
my specimens, indeed, in shape more nearly resemble his figure 
of the latter. M. rivularis is united by M. Brot to M. tuber- 
