52G IIELIX. 



convexiusculi, sutura mediocri separali; ultimus amplior, inflatus, 

 rotundatus, ad aperturam non descendens; apertura fere verti- 

 calis, mai^iia, sublunata; peristonia simplex, acutum, margine 

 dextro regulariter arcuato, columellari ad insertionem reflexo. — 

 Diam. maj. 7, min. 6, alt. 6; apert. alt. Sy^, lat. 8^/3 mill.» (1.) 



Nanina tersa (Macrochlamys) /sseZ Moll. Born. 1874. p. 36. t. 5. 

 f. 1—4. 



Habitat in insula Borneo. 



* 



239. Gundlachi Pfr. — Helix pusiUa Pfr. oliin, cgena Goiild. 



2iS\ H. pcrlucida (Hyalina?) Isscl. f 



«Testa parva, minutissime perforata, orbiculato-conoidea, 

 fragilissiina , corneo-lutescens, perlucida, sub vaiida lente ob- 

 lique striatula; spira convexo-conoidea, apice obtuso; anfractus 

 5 convexiusculi, lente crescentes, sutura distincta separati, ul- 

 timus basi paululum convexus, ad aperturam non descendens; 

 apertura verticalis, angusta, lunata; peristoma acutum, margine 

 columellari ad insertionem breviter reflexo; area umbilicalis 

 paululum excavata. — Diam. maj. 2^3, alt. 2; apert. long. 

 IV3 mill.» (I.) 



Hyalina (?) perlucida Issel Moll. Born. 1874. p. 39. t. 5. 

 f. 20 — 2 3. 



Habitat Bintulu in territorio Sarawak, Borneo (Doria, Beccari). 



244^ H. Macdougalli (Nanina?) Isscl. f 



«Testasubobtecteperforata, orbiculalo-conoidca, fragilissima, 

 corneo-Iutescens, paululum nitens, translucida, sub valida lente 

 oblique striatula; spira convexo-conoidea; anfractus 4^^ con- 

 vexiusculi, sutura distincta separati, ullimus plerumque obscure 

 subangulatus, basi convexus, antice paululum descendens; aper- 

 tura obliqua; lunata ; peristoma acutum, margine columellari ad 

 perforationem breviter reflexo. — Diam. maj. 2, alt. IVzj apert. 

 long. 1 mill. » (I.) 



Nanina (?) Macdougalli Issel Moll. Born. 1874. p. 37. t. 5. 

 f. 9—12. 



Habitat in territorio Sarawak, Borneo (Doria, Beccari). 



* 



246. Vimontiana Crossc. — Crosse in Joiirn. Conch. XXIII. 1875. 

 p. 217. t. 9. f. 2. 





