NAT.. 
VOL. XVIII, No. 2. 
liy TOM IRF:DALE. 
11 . 
20, 1896), wrote: “A shell which I refer to this species was- 
collected in sonsiderable numbers in Central Australia. The 
majority of the specimens have the denticulation of the aperture 
as figured, and described, by Smith, which consists of a strong 
plait in the middle line of the body whorl, one on the columella, 
and two palatal, the four being approximately equidistant, whilst 
a denticle is situated at the insertion of the outer lip. Some 
variation in this arrangement is supplied by my specimens, the 
parietal and columellar plaits are relatively very large and oc- 
casionally a denticle is interposed, as also another between the 
two palatal plaits, whilst the tubercle at the insertion of the 
labrum is often absent. Localities. — Tempe Downs, Reedy Creek,. 
Palm Creek, Stuart's Pass, Painter Spring and Alice Springs." 
Pilsbry thereupon separated some specimens as ‘‘tatei'’ but he had 
not seen margaretae, and comparison suggests that these are very 
closely allied. Pilsbry later (Man. Conch. (Tryon) Ser. 2, Vol. 
XXVI, (pt. 104), p.230, pi. 24, figs. 6, 7, Nov. 1921) figured true 
viooreana^ and showed it was a very different shell. 
Australbinula margaretae. PI. I, fig. 4. 
1868. Pupa margaretae Cox, Mon. Austr. Land Shells, p.80, 
pi. XIV, fig. 20a, May. Wallaroo, South Australia 
(Masters) . 
1917. Gastrocopta margaretae Pilsbry. Man. Conch. (Tryon), 
Ser. 2, Vol. XXIV, (pt. 94), p.l60, pi. 26, figs. 7, 8. 
July 18. 
All that Pilsbry could do was to copy Cox’s description and 
figure, as Hedley reported that the type could not be found in 
the Australian Museum, and no one had apparently recognised it 
in South Australia. 
Specimens sent from the South Australian Museum from 
the “rocky slopes of Mannum Cliffs” labelled as ''margaretae''' 
agree very closely with the description and figure and can be 
well accepted as typical. This species shows a long rather twisted 
parietal lamella, similar to that of tatei, and quite different from 
that of larapinta. The basal tooth is large and the upper palatal 
is deeply set. 
Genus Themapupa. 
1930. Themapupa Iredale, Viet. Naturalist, Vol. 47, p.l20, Nov. 
Haplotype Pupa beltiana Tate. 
These shells are much larger Pupoid shells than the preced- 
ing, from 4 mm. to 6 mm. long, and are either sinistral or dextral, 
the mouth open with only a tubercle on the base of the shell 
