71 
A liEviEw OF THE Lj.xd Mollusca OF Wksteex Australia. 
naiToiv, open, colinm'lliir rcllcctioii slight, outur li]) thin not iTlk'ctcd, colora- 
ation shilling white, with two faint brown bands on last whorl, one peri- 
pheral, the other midway bdweeii this and suture. Apical whorls, one and 
a half, .smooth, adult whorls five and one half, sculptured with close wavy 
irregular rough ridges, subgranulose, base a little smoother. Columella a 
little curved with a strong glaze connecting inner and outer Ifp, but not 
forming a continuous aperture. 
Height, 11 iimi.; breadth, 12 mm.; aperture, (i mm. high by (5 mm. broad. 
While (he rough sculpture is not identical with that of plectiUs, it 
recalls that, and no other Western Australian shell has any sculpture at 
all like. This species is therefore placed tentatively under Flectorhagada, 
but as its shape is so different from that of the typo, a new subgeneric name 
is here introducerl, Idamera, with P. roriiiu as type. 
(tenns BELLRHAGADA Irednle 19:18. 
1(188 — Bellrliagada Iredale, Anstr. ZooL, Vol. IX., p. 114, Nov. 30. Orthotype 
Bhagada pUcatn Preston. 
Smalle.st Hhagadoiil shells, flattened globose, imperforate, sutures almost 
canaliculate, mouth subcircular, lip little t;xpauded, sculpture of regular 
I'adials weaker on the bas(', the a[iical whorls large and smooth. 
This little shell is (|uite similar to the typ(‘ of Rhagadu but is plicate 
above, and is here difl’erentiated, as it ai^peai's to have an extra-Australian 
representati\e in fiiipracostiilata, which has the umbilicus not completely 
sealed. 
Bellrhagada plicata Preston 1914. 
Plate Y., flg. 16. 
1914 — Rlunjadd pliraia Preston, Proc. Alalac. Soc. (Loud.), Vol. XI., p 13, 
tig. in te.xt, Mch. 30. .Montebello Is., West Australia. 
The .smallest of the Hhagadoid series, this shell is thattened globose, spire 
short, very little elevated, whorls little rounded, sutures deep, last whorl 
descending a little, mouth subcircmhir, open, outer lij) a little reflected, basally 
thickened; columella slanting, appressed, sealing the umbilicus save for a 
minute chink, coloration white with one broad iieripheral band, two narrower 
ahoi'e, and half a doz(‘n ixdow : these are pale brown but may be darker 
in life. 
The sculpture is peculiar, the apical whorls smooth, the adult whorls 
with flattened obli(|ue distinct radials, these persisting obscurely on the base. 
PiTTulth lO mm.; height 8 mm. 
[Helix dringi Pfeiffer 1846. 
1846 — I-Ielix dringi Pfeiffer, Syrab. Helic., Vol. III., |). 73, “Austral, oriental. 
(Bring in Alus. Cuming).” 
1848 — Helix dringi Pfeiffer, Alon. Helic. viv., Vol. T., p. 289, “Austi'alia 
oriental, profie ‘Ton-es Strait’ (Bring).’’ 
1852 — Helix dringi Reeve, Conch. Icon., A’ol. VIL, pi. 128, sp. 769, October. 
1868 — Helix dringi Cox, Mon. Austr. Land Shells, p. 64, pi. XI., flg. 9, May. 
1890— Helfr dringi Pilsbry, Alan. Conch. (Tryon), Ser. IT., Vol. AH., p. 186, 
Bee. 16, flg. Tor A oh IV., pi. 36, flg. 40, Jan. 3, 1889, ■where there is 
no text. 
All these references refer to the single si-)ecimen collected by Bring, and 
credited to Eastern Australia, near Torres Strait. The figure recalls species 
