216 PEOCEEDINGS OF THE MALACOLOGICAL SOCIETY. 



the aperture ; peristome subcircular, expanded, continuous. Diam. 

 maj. 2*75, alt. 2mm. 



£rah. — Tenimber I. 



Allied to H. Meretti, Smith, from Kalao Island, but tbis species is 

 narrower, tbe aperture does not project so far from the body-whorl, it 

 is more closely coiled below, and is not perspectively umbilicated. 



7. Ptjpa (Leucochilxts) Niobe, n.sp. PL XI, Pig. 10. 



Shell elongate-oval, rimate, smooth, dirty white ; whorls 5, convex ; 

 peristome oval, thin, continuous, expanded ; internal armature of 

 the aperture consists of -five plaits, two, rather long entering folds on 

 the parietal wall, one on the columella side, and two on the basal 

 portion of aperture. Diam. maj. 1, alt. 2 mm. 



Hal. — Tenimber I. 



This has kindly been compared by Dr. von MoUendorff, who says 

 that the species has some affinity with P. recondita, Tapp.-Can., from 

 the Aru Islands, but is smaller and more cylindrical in form. 



8. CAEYCHroii Bawanum, n.sp. PI. XI, Pig. 11. 



Shell elongate, rimate, smooth, glassy, semi-transparent ; whorls bh, 

 convex, regularly increasing ; aperture oval, somewhat oblique ; 

 peristome thin, slightly expanded, continued over the parietal wall ; 

 a fold on iipper part of columella. Diam. maj. 0*75, alt. 1*75 mm. 



^a*.— Bali I. 



I am indebted to Dr. von MoUendorff for a comparison of this 

 species. He writes: "Differs from C. Javammij Molldff., from Java, 

 in being of a more slender form, smaller, and with a narrow aperture." 



9. DiPLOMMATiNA Baliana, n.sp. PI. XI, Pig. 16. 



Shell dextral, thin, oval, transparent white, tinted with a golden 

 colour, spire acuminate; whorls 6g-, first five increasing slowly, 

 penultimate slightly broader than the last, sculptured with close-set, 

 thin costse, which are wider apart on the latter part of the last 

 whorl ; a slight constriction above the aperture ; aperture circular, 

 erect; peristome somewhat expanded, continuous. Diam. maj. 1-25, 

 alt. 2-5 mm. 



Hah. — Bali and Sumba Is. 



In general form and sculpture very near JD. concolor^ Quad. & 

 Mdff., from the islands of Luzon and Palawan ; but readily separated 

 therefrom by its almost circular aperture and the absence of a columella 

 fold. Dr. von MoUendorff informs me that he knows of no Javan 

 species that approaches this. 



10. DiPLOMMATiNA (Palaina) Moellendoefei, n.sp. PI. XI, Pig. 18. 



Shell dextral, ovate, slightly rimate, either pale yellow or suffused 

 with a pinkish colour ; whorls 6, very convex, obliquely striate, 

 penultimate, slightly broader than body- whorl, the latter shortly 

 ascending ; constricted just above the aperture, with a prominent 



