246 MELANIID^. 



var. pseudo-truncatula, nov. 



Brot, ConcL'Cab., II, 1874, pi. 26, fig. IIF. 



4 Mauritius ; coll. J. Caldwell, Esq. 

 12 Bourbon ; coll. G. Nevill, Esq. 



Resemble fairly M. Brot's above-quoted figure; rather 

 smaller. 



1 Locality ? ; ex c. Dr. F. Stoliczka. 



A remarkable form, perhaps distinct. 



var. appressa, nov. ' 



2 Mauritius j coll. J. Caldwell, Esq. 



Much contracted, spire elongately drawn out, columella 

 characteristically twisted backwards, very slightly decollate ; 

 long. 29J, diam. 9 mil. 



No longitudinal sculpture, the spiral keels acute. 



83. Melania [Striatella] gemmulata. 



Melania gemmulata, Reeve, Icon., 1859, fig. 86, Sab. ? 

 2 West Indies ? ; ex c. G. Nevill, Esq. 



34. Melania [Striatella] fontinalis.l 



Melania fontinalis, PMlippi, Abb. Ill, 1851, " Fulo Pinang, in aquceducti- 

 bus " Inot of Brof]. 



6 Penang ; coll. Dr. F. Stoliczka. 



Anfr. 6 ; long. 26, diam. 9 J mil, Throughout irregularly 

 and acutely, spirally striate, striae 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^ 



