i:)2 l\v. II. C. Fulton on 



Rtiipes wliicli are intersected in the middle by a narrow spiral 

 band of lii,^liter ccdour ; the under jiart of last whorl has a 

 rather hroad daik brown band situated just below the peri- 

 phery and a narrower one lower down, lielween which is a 

 yt How one, umbilical area reddish; whorls G, convex, rather 

 slowly increasiufT ; aperture with outer markinfi;s showing 

 throuirh ; peristome slightly expanded, flesh-c«dour; columella 

 vertical, tlesh-coloured, rounded and slightly expanded at 

 point of insertion. 



^laj. diam. 17, alt. 30 mm. 



JIal>. Nias Island, Sumatra. 



Although totally distinct in coloration, the details of this 

 species agree very closely with A. Sowerbyi\ but the whorls 

 of niasensis are slightly more convex and increase a little 

 slower in size than those of A. Soicerht/i. 



It is also similar to pcpcilochroa, Fult., in form and 

 markings, but is thinner and its whorls are more convex. 



Anqyhidromus Soicerht/i, sp. n. (PI. IX. fig. 10.) 



Shell sinistral, thin, umbilicus almost closed, nucleus dirty 

 white with a brown spot at the apex ; lower whorls yellow, 

 with six narrow dark brown spiral bands on tiie middle 

 whorls, the last whorl having two broader bands in front, one 

 situated just below the |»eriphery and the other a little lower, 

 umbilical area yellow, finely obliquely striated; whorls ()^, 

 moderately convex, rather slowly increasing ; aj)erture with 

 the outer bands showing through ; peristome very narrowly 

 expanded, w axy colour ; columella vertical, narrowly expanded 

 at point of insertion. 



5laj. diam. 17, alt. 31 mm. 



JIab. Nias Island, Sumatra. 



This new form bears a great resemblance in coloration and 

 markings to some of the varieties of Helix nemoralis, Linn. 

 The number of bands varies, one specimen before me having 

 only a single narrow peripheral band. 



Named in honour of my esteemed and genial colleague, 

 G. B. Sowerby, Esq., F.L.S. 



Amphidromus Webhi, sp. n. (PI. IX. fig. 8.) 



Shell sinistral, moderately solid, earlier whorls yellow, 

 fading to cream on lower whorls, with a broad lightish 

 chestnut band about W mm. wide encircling the last whorl 

 and continued as a narrow ever-diminishing band at suture of 

 penultimate whorl ; whorls 0|, moderately convex, with 

 incon.spicuous oblique growth-lines, last ascending slightly at 



