S.A. NAT.. 
VOL. XVIII, No. 2. 
By TOM IREDALE. 
43. 
\ot Helix angasiana Newcombe May 1860. 
In the Journ. Conch. (Leeds), Vol. I, p,135, 1876, Angas 
gives the exact locality of arigasiana as “Arrowie, near Lake 
Torrens.” A paratopotype from the Angas collection is in the 
Australian Museum. 
A specimen from Charlotte Waters is similar but smaller 
with the last whorl more expanded, the umbilicus wider and is 
here named exposituvi nov. PI. II, fig. 22, as it tends to connect 
typical godfreyi in range with the Central Australian series. 
Sinumelon fodinale. 
1892. Helix (Hadra) fodinalis Bednall, Trans. Roy. Soc. South 
Austr., Vol. XVI, p.63, pi. I, figs. 1, a c, December, ex 
Tate MS. Wankaringa, South Australia. 
Tate reported that this was the most widely spread and 
abundant snail met with by the Horn Scientific Expedition, and 
then gave tables of variation and discussion on sculpture, neg- 
lecting entirely the details of the distribution which might have 
solved his troubles. As the true fodinalis appears to be a small 
relative of godfreyi, it does not seem to be possible for it to exist 
In the interior and no specimens have been seen from Centralia 
that would be classed under this species strictly speaking. The 
true fodinalis appears to spread eastward, a form being found 
inside the New South Wales border. 
From Mt. Serle a smaller form with a wider umbilicus agrees 
in detail with fodinalis, the sculpture being a little coarser, and 
the spire generally a little more elevated. This may be called 
S. fodinale serlense subsp. nov. PI. II, fig. 12. 
Sinumelon flindersi. 
1864. Helix {Hadra) flindersi Angas, Proc. Zool. Soc. (Lond.), 
1863, p.S2I, April 20 1864, ex A. Adams & Angas MS. 
Tillowie, near western slopes of Flinders Range, South 
Australia. 
Figd. Cox, Mon. Austr. Land Shells, p.51, pi. XX, fig. II, 
Mav 1868 (type figured by Angas). 
1868. Helix bitaeniata Cox, Mon. Austr. Land Shells, p.50, 
pi. IV, fig. 9, May. Port Augusta, South Australia 
(Masters). 
Refigd. Angas, Proc. Zool. Soc. (Lond.), 1876, p.268, pi. 
XX, figs. 15, 16 (Masters). 
d'his form is an erect globose shell whereas godfreyi is a 
flattened globose type, in the former case the umbilicus being 
nearly covered, in the latter notably open, the mouth also expand- 
