140 PETTERD : NEW TASMANIAN SHELLS. 



20. Obeliscus Tasmanica n. sp. Shell cylindrical, white, ' 

 pellucid, shining, with an obscure line on apical whorls; 

 whorls 6, flattened, suture scarcely indented. Long. 

 8 mill., lat. 3I mill. 



Habitat, North West Coast. 



Aclis turrita n. sp. Shell subulate, turreted, thin, 

 white ; whorls 7, suture much impressed, last elon- 

 gated ; aperture small, pyriform. Long. 3 mill., lat. 

 I mill. 



Habitat, North Coast and Isles in Bass's Straits. 



Sty lifer robusta n. sp. Shell tumidly pyramidal, 

 opaque white, shining, spirally lined ; whorls g^, 

 suture much impressed, rounded, last large, angled at 

 middle ; aperture pyriform ; labrum thin, acute. 

 Long. 13 mill., lat. 6 mill. 



Habitat, Leven Heads (Miss Lodder). 

 This remarkably fine form is quite an acquisition 

 to our MoUuscan fauna. I have only seen one or two 

 perfect specimens, but many in a more or less broken 

 condition. 



Sty lifer Lodderae n. sp. Shell elongately pyramidal, 

 thin, shining, milky-white ; whorls 12-13, moderately 

 rounded, marginate at suture with faint spiral lines, 

 last sub-obtuse at periphery ; aperture pyriform, 

 labrum thin, acute. Long. 16 mill, lat. 6 mill. 



Habitat, North West Coast (Miss Lodder). 



Of this species I have seen a somewhat large 

 number of examples. It varies a little in form, some 

 specimens almost running into the preceding. It is 

 never very highly polished, but invariably has a milky- 

 white appearance ; the same remarks also apply to 

 S. robusta. 



J.C, iv., Jan., 1884. 



