from the Malay ArcMpelago. 419 



(27) Neritina [Neritina) wetarana, sp. n. 



Shell semigiobose, very solid, densely and minutely 

 striated, light brown with an irregular black network pattern, 

 or a nearly unit'ortn black with small yellow markings ; apex 

 distinctly marked; aperture bluish white; columellar area 

 smooth, polished. 



Diam. 20, alt. 19 mm. 



Type locality. Ilvvaki River, near Ilmedo, Wetar. 



Specimens examined 19. 



{28) Septaria elberti, sp. n. 



Shell oviform, rather rounded anteriorly, somewhat pointed 

 behind, moderately inflated, rather solid ; apt x very distinctly 

 projecting beyond the posterior margin, worn away below ; 

 epidermis light to dark brown, with narrow, oblique, dark 

 bands showing the tendency to form a network laterally and 

 posteriorly ; septum rather broad, with a distinctly convex 

 margin ; inside uniformly bluish white. 



Ler.gth 24*5, breadth 20, height 8 mm. 



Type locality. Kali Spi, Flores; some more specimens 

 from an unnamed locality in Flores. 



Specimens examined 7. 



(29) Tarehia celebensis hoetonensis, subsp. n. 



Distinguished from typical T. celebensis by its much more 

 conic spire, more convex last whorl, and by the sculpture 

 showing nodules only on the upper part of the whorls. 



Length 24, diam. 9*5 mm. 



Type locality, Lipoemangaoe, S.E. Boeton. 



Specimens examined 13. 



(30) Plotia scalra suhlcevisy subsp. n. 



A slender, high conic, and nearly smooth form of P. scahra, 

 related to von Martens's P. scabra mutica, but distinguished 

 from it by its higher whorls, by a very indistinct angle on 

 the uppermost portion of the last two whorls, and by its high, 

 narrow, piriform aperture. 



Length 26, diam. 11 mm. 



Type locality, Sadjang, Lombok. 



Specimens examined 12. 



(31) Melanoides striatissi'mus, sp. n. 

 Shell high conic, solid, light brown to black, often with 



