BY \V. L. MAY. 63 



a very distinct little species. I place this in Hauralia 

 with some diffidence, bnt it seems to come closer to such 

 species as H. sf range/ than any other forms. 



PL XV., fig. 16. 



Amphithalamus luteofuscus, sp. nov. 



Shell minute, turbinate, smooth, lustrous red-brown, 

 with the first half of the body whorl and mouth, yellow, 

 also a light band below the suture. Whorls four, much 

 rounded, body whorl large in proportion. Aperture : 

 The actual opening is small, oval, aiid set very obliquely 

 to the spire ; it is surrounded by a. raised edge or keel. The 

 peristome, which is continuous, is broadly pjaiform. ex- 

 panded and planulate, recessed towards the aperture; it 

 IS projected somewhat from the base of the shell, which 

 is sub-umbilicate. The operculum is thin, semi-trans- 

 parent, and appears to be subspiral. 



Length, 1 ; breadth, .6 mill. 



Habitat. Type, with several others, from Kelso, near 

 Tamar Heads, collected by Augustus Simson. 



This minute sliell is in size and general appearance 

 similar to A. jacksoni, Brazier, but differs sufficiently in 

 the details of the mouth, and also in the coloraticn ; it is 

 in some respects still more like A. atro purpurea. That, 

 however, is a much m.ore ventiicose and massive shell, 

 which does not seem to have been heretofore recognisiecl 

 as a member of this genus, although it is extremely 

 characteristic, 'and closely allied to A. jacksoni. 



PI. XVI., fig. 17. 



NOTOSETIA PURPUREOSTOMA, Sp. nOV. 



Shell minute, bluntly turbinate, smooth, polished, 

 pale rose colour, lip rose-purple. AVhorls three, much 

 rounded, suture impressed. Aperture, roundly oval, lip' 

 continuous, with a thickened edge, and reflexed on the 

 columella side. 



Length, 1 ; breadth, .8 mill. 



Type, with a dozen others, from Penguin, in shell 

 sand. It has a superficial resemblance to Amphithalamus 

 afro purpurea, Frauenenfelt, from which the latter's typical 

 aperture at once separates it. 



PL XVI., fig. 18. 



Rissopsis BREVis, :?p. nov. 



Shell very small, cylindrical, blunt, smooth, pure 

 white, pellucid. Whorls, four and a half, rather rounded, 



