418 Dr. F. Haas on nero Shells 



colour, with dark undulating oblique striae between the suture 

 and tiie uppermost keel ; apex distinctly marked ; wliorls 6, 

 rapidly increasing, the last somewhat descending anteriorly; 

 suture well impressed ; aperture oblique, circular ; peristome 

 somewhat thickened and expanded, the margins connected 

 by a faint columellar callus. 



Diam. maj. 7, diam. min. 6"25 mm. ; alt. 6'5 mm. 



Type locality. Kabaena Island. 



Specimen examined 1. 



(23) Leptopoma celehesianum concoloi'j subsp. n. 



Smaller than typical L. celehesianum^ wider umbilicated, 

 extremely fine sculptured, and of a uniform whitish colour. 

 Diam. maj. 8*5, diam. min. 7 mm. ; alt. 8"25 mm. 

 Type locality. Mengkoka, S.E. Celebes. 

 Specimen examined 1. 



(24) Vivipara javanica soembawana^ subsp. n. 



Differs from typical V. javanica by its more globular 

 general form, lower spire^ and more convex whorls. 

 Diam. maj. 18, diam. min. 16 mm. ; alt. 23 mm. 

 Type locality. Dompoe, Soembawa. 

 Specimen examined 1. 



(25) T ivipara javanica lomhocensis, subsp. n. 



This local form is strikingly similar to V. javanica borneensisf 

 Kob., from whicii it is distinguished by its smaller size, lower 

 spire, better impressed suture, and more convex whorls. 



Diam. maj. 17'5, diam.*min. 15 mm. ; alt. 23 mm. 



Type locality. Bajan, Lombok. 



Specimens examined 16. 



(26) Neritina {Clithon) soembaioanaj sp. n. 



Shell semiglobose, very solid, densely striated or rugose, 

 without spines, greyish brown to dark brown, dull, often very 

 indistinctly marbled; last whoil distinctly shouldered ; aper- 

 ture white or yellowish white ; columellar area rather smooth, 

 columellar edge finely dentate and with a blunt tooth in its 

 upper part. 



Diam. 20'5, alt. 17 mm. 



Type locality. Bima, Soembawa. 



Specimens examined 19. 



