from the Malay Archipelago. 419 



(27) Xerilina {NerUlna) wetarana, sp. n. 



Shell semiglobose, very solid, densely and minutely 

 striated, light brown with an irregular black network pattern, 

 or a nearly unitbrnr black with small yellow markings ; apex 

 distinctly marked; aperture bluish white; columellar area 

 smooth, polished. 



Diam. 20, alt. 19 mm. 



Type locality. Ilwaki River, near Ihnedo, Wetar. 



Specimens examined 19. 



(28) Septarla elherti, sp. u. 



Shell oviform, rather rounded anteriorly, somewhat pointed 

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

 projecting beyond the posterior margin, worn away below ; 

 epidermis light to daik 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. 



Length 21*5, breadth 20, heiglit 8 mm. 



Type locality. Kali Spi, Flores; some more specimens 

 from an unnamed locality in Flores. 



Specimens examined 7. 



(29) Tarebia celehensis boelonensis, subsp. n. 



Distinguished from typical T. celehensis 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. Llpoemangaoe, S.E. Boeton. 



Specimens examined lo. 



(30) Plotia scahra suhlwvis, subsp. n. 



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

 related to von Martens's P. scahra muti'ca, 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. 



Lengtli 26, diam. 11 mm. 



Type locality. Sadjang, Lombok. 



Specimens examined 12. 



(31) Melanoides striatissimus, sp. n. 

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



