40 
Toil lEEDALE. 
(ieniis PEKNAGERA Trcdale 1933. 
1933 — Pemageru Iredale, Hoc. Au.str. Mas., Vol. XIX., p. 53, Aug. 2. Ortho- 
type Helix (ubanensiti Cox. 
Shell siriall, somewhat elevated for this family with a. very wide cav- 
ernous umbilicus, the radial sculpture being rather coarse. Whorls loosely 
coiled, sutures deeji, almost canaliculate, atiex radially striate, tlu' tip smooth. 
The mouth is subcircular, outer lip thin, columella straight, .scarcely reflected 
at all. 
Pernagera albanensis Cox 3808. 
Plate I., llg. 23. 
1868 — Helix alhancnxis Co.x, Proc. Zool. Soc. (Loud.), 1867, p. 723, April 3. 
King George’s Sound, We.st Australia (Ma.sters). Fig’d. Cox, Mon. 
Austr. Land Shells, p. 15, pi. IV., tig. 2, May, 1868. 
Shell small, almost subglobose, spire conical, whorls rounded, loosely 
coiled, almost seiiarated by a canaliculate suture, the last whorl descending, 
other characters as for the genus. Coloration fawn, irregularly rayed with 
reddisli. Ajie.x tip smooth, then radiately striate, the striae developing into 
riblets which are iiunKu'ous and fairly regularly spaced, about .seventy-five 
on last whorl, the interstices finely radially striate, no concentric lines 
apparent, t'mbilicus funnel shaped, about one-half the width of the shell. 
Breadth 5 mm. ; height 3 mm. 
Pernagera lena sp. nov. 
Plate III., fig. 3. 
A very pretty li ttle .shell, col haded hy Mr. Sidney W. Jackson at the 
Bow River, recalls allxineuxis in miniature. Shell .small, subdepressed, sirire 
.slightly elevated, whorls rounded, sutures deej), almost eanaliculate, last 
whorl deseending a little, mouth subcircular, eoliimella straight, scarcely 
refleetcil, umbilicus wide, fniiiiel shaped exposing all the whorls. Coloration 
pale brownish with broad red (lames. A|)e.x smooth at tip, then finely radially 
striate, the striae developing into ridges wliich are regular and numerous, 
numbering about one hundred and twenty on the last whorl, the interstices 
striate. Umbilicus about half the widtli of the base of the shell. Breadth 
3 mm.; height 1.5 mm. Under hark and leaves on the ground in Hazel scrub. 
Gciiiis LUINODISCUS Iredale 1937. 
1937 — Luinodisenx Iredale, Austr. Zook, Vol. Vlll., ]>. 331, Mch. 12. Ortho- 
t.vpe Helix cnprea Cox. 
“Stnall flattened eharopid sludls, .spire not sunken, umbilicus wide, mouth 
small, thin, seulpture of regular fine radials, protoconch s^nrally lirate.” 
While the type of Luinodixcux is a small shell, other species, referred for the 
present to this group, ai'e large and more bulky. 
Luinodiscus cupreus Cox t868. 
Plate ITT., fig. 5. 
1868 — Helix, cnprea Cox, iVlon. Austr. Laud Shells, p. 22, pi. XIT., fig. 9, May. 
King George’s Sound, West Australia ((Masters, A. M.). 
1875 — Helix (Charopa) nnpera Brazier, Proc. Linn. Soc., N.S.W., Vol. I., 
p. 18, Apl. 27. King George’s Sound, W.A. (Masters). 
