220 PUPILLA, AUSTRALIA. 



Figures 13, 14 are from Edithburg specimens ; this place is 

 opposite the type locality, Rapid Bay, on St. Vincents Gulf. 

 Larger and smaller shells, but without exact locality, are also 

 measured above (figs. 17, 19). 



The Sydney form, nelsoni, is drawn in figs. 15, 16, ' ' Sirius 

 Cove, among dead leaves raked out of a rock crevice. This 

 has rarely been gathered, and never out of sight of salt 

 water," according to Hedley (in litteris). It is a little 

 smoother than the South Australian shells, and the teeth are 

 stronger. Length 3.8, diam. above aperture 1.8 mm. ; 6 l /2 

 whorls. The specimens figured were compared by Mr. Hedley 

 with a cotype of nelsoni. 



P. australis appears to be spread along the coast from Syd- 

 ney to Western Australia, yet there are wide gaps in the 

 southeast and southwest between the recorded localities. Pro- 

 fessor Tate notes that it "is essentially confined to the coast, 

 and I have traced it from St. Vincent Gulf along the coastal 

 sand hills into West Australia. ' ' 



Descriptions of the several synonyms follow. 



Pupa nelsoni. Shell sinistral, perforate, elliptically cylin- 

 drical, thin, smooth, microscopically striated, horny reddish- 

 yellow, slightly shining; spire slowly narrowing, obtusely 

 rounded : whorls 5 to 6, slightly convex, last about % the 

 length of the shell; aperture large, rounded, truncate above, 

 with a conspicuous lamelliform tooth on the wall of the aper- 

 ture, and another, or tubercular callosity, sometimes larger, 

 but obsolete in young specimens at the columellar junction; 

 peristome and teeth white, former expanded, especially at the 

 columella, and not obstructing the minute umbilical opening 

 at the bottom of a deep fissure. Length 0.15, breadth 0.07, 

 aperture 0.05 long, of an inch. Nelson Bay, near Sydney, N. 

 S. W., King (Cox). 



Pupa lincolnensis (lincolniensis).-- Shell sinistral, rimate, 

 elliptically-oblong, very finely obliquely striated, whitish or 

 rufous horny ; spire obtuse ; whorls 4 to 6, rather convex, last 

 by no means equalling the rest; aperture almost vertical, 

 Innately-circular ; peristome thickened, expanded, white, mar- 

 gins distant, columellar margin straight, sinistral margin 

 above obtusely angled ; body whorl centrically armed with a 

 prominent, obtuse, white tooth. Length 0.13, diameter 0.08 of 

 an inch. Port Lincoln, South Australia (Cox). 



