' 26 . 
LAND SHELLS-. 
S.A. NAT.. 
VOL. xvrn. No. 2. 
but apex concentrically striate. Although in my Basic List I 
classed aemula in this genus, the apex appears to be smooth or 
v-ery finely radiajly striaie, while ‘the concave spire recalls 
Geminoropa, but that genus belongs to the damp forests of 
' Tasmania. 
Pillomena aemula. PL I, fig. 2. 
1894. Charopa aemula Tate, Trans. Roy. Soc. South Austr., 
Vol. XVIII, p.l92, November. Central Australia. 
1896. Rep. Horn. Sci. Exped. Centr. Austr., pt. II, ZooL, p.l86, 
pi. XVII, fig. 2, February. Penny Springs, George 
Gills’ Range. 
Family Stenopylidae. 
The strange little shell called Planispira hemiclausa by Tate 
(who admitted Planispira was a pen-slip for Polygyra) was trans- 
ferred by Hedley to Microphyura, a genus introduced for a New 
' Caledonian shell. Hedley examined a dried-up animal of the 
Central Australian species, and secured portions of a radula and 
jaw. Upon this he concluded “The structural details now given 
are not reconcilable with the accepted position of the genus 
(Microphyura) in Rhytididae, and I apprehend that it should 
correctly appear in the Endodontidae, intermediate between 
.Laoma and FlammulinaP He also remarked “The genus {Micro- 
^phyura and hemiclausa) would seem from Its distribution and 
anatomy to be of high antiquity and of Antarctic origin. It is, 
perhaps, one of the most primitive of Australian snails.” 
I regard Laoma and Flammulina as representing two families 
-Separate from the Australian Charopids above reported as Endo- 
dontidae, and cannot see much conchological relationship with this 
■species. The shell is of different formation while the mouth is 
very unlike any other in the supergroup Endodontidae, the thlck- 
'cning being of a different nature. Hence It must be regarded as 
■ of family value and its exact position is yet unknown. 
Genus Stenopylis. 
1914. Stenopylis Fulton, Ann. Mag. Nat. Hist., Ser. 8, Vol. XIX, 
p.l63, August 1. 
Orthotype Planispira hemiclausa Tate. 
This little shell is flattened, discoidal, whorls rounded, mouth 
■ oblique, lips thickened^ widely umbilicate. The generic name 
Stenopylis was introduced by Fulton, who distinguished it on 
account of the presence of two spiral laminae on the parietal wall. 
The sculpture also lacks the Endodontid radials. 
