LAND- AND FRESHWATER SHELLS. 149 



Diam. maj. 34, min. 30 ^j, alt. 28 mill. 



Localities: Ka-Tokawai, East Soemba, many specimens; 

 Massoe , central S. E. Soemba , one broken specimen ; sea- 

 shore of Melolo , one empty specimen , and a subfossil one 

 from a brook between Pensadoe Eopol and 'Ndatas. 



This species is remarkable for its shape and colouring, 

 which call in mind some species of Cochlostyla , the upper 

 whorls presenting in both respects a strong contrast with 

 the last whorl. The following varieties in colour may be 

 distinguished : 



1. Upper whorls pale green, with the last whorl more 

 or less distinctly orange, interior of aperture bright orange. 



2. Like the preceding, but upper whorls yellowish, 



3. Upper whorls pale green, last whorl yellowish, 

 interior of aperture citron yellow. 



4. Like the preceding , but upper whorls pale yellowish. 



5. » N°. 3 but interior of aperture white. 



6. » » 5 » upper whorls whitish. 



7. Upper whorls pale green , last whorl bright green , 

 with darker streaks, bluish towards the aperture, interior 

 of aperture white. 



This species seems to be allied to Nanina bimaensis 

 Mouss. and N. Jialata Mouss., but the apex is more obtuse 

 than in those species, as figured in »Mousson, Mollusken 

 von Java", plate 21, figs. 1 and 2, the last-named variety 

 resembling N. halata in colour ; the chief difference may 

 be the biangular character of the last whorl , and the 

 resulting contrast with the upper whorls. 



The specimens vary slightly in shape and size. 



7. Helix argillacea Fer. 



Martens, Ostas. Landschn. p. 273. 



Localities: Lamakera, Solor. — Lahoeroe , Fialarang and 

 Amarassi, central Timor; Koepang, Timor ; Neklioe , North 

 west Coast of Timor. — Ka-Tokawai , East Soemba ; Wain- 

 gapoe, Massoe, seacoast of Melolo, Soemba. — Subfossil 



Notes from the Leyden IMiiseuiii , VoL XJV. 



