A Review of the Land Mollusca of Western Australia. 
7 
Shell very small, stouter than first named, mouth a; mature not so com- 
plex and fokls dilf'ereiilly placed. 
Pupillidao. 
Genus- AUSTEALEINULA Pilsbry 1916. 
1916 — Australbinida Pilsbry, Man. Conch. (Tryon), 2nd Ser., Vol. XXIV. 
(pt. !K5), p. II., Dec. 18: id. (pt. 94) pp. ].o5/166, July 18, 1917. 
Drtliotypc (iaHtrocopln Pilsbry. 
Small Pupoid shells, de.xtral, rarely sinistral, faintly striate, with the 
small mouth almost closed by teeth blocking the aperture: a large eolumellar 
tooth; on the base of the slidl one to three, called the parietal teeth, one of 
which is generally larger than the others ; and on the inside of the outer Tip 
three or four, called ]ialatal, teeth. .Vll the shells are small, up to 3 mm, in 
length, and must be examined microseoiheally for differentiation. 
Australbinula wallabyensis Smith 1894. 
1894 — Pupa wallabi/ensis Smith, Proc. Malac. Soc. (Lond.), Vol. I., p. 97, 
June. Mast Wallaby Island, Houtman’a Abrolhos (Walker). 
1916 — Bifldaria u'dlliibijensif; Hedley, .lourn. Roy. Soc. IVest. Aust., Vol. I., 
p. 217 (68 in se]).). 
1917 — Gastrocopta iraUabiiensin Pilsbrv, Man. Conch. (Trvon), Ser. 2, Vol. 
XXIV., pt. 94, p. 171, July is. 
Unfortunately this ,S|)ecies has not yet been figured, and no specimens 
from the Abrolhos are available. Smith described it in great detail as fol- 
lows: “Shell dextral, cylindrical, pellucid, white, narrowl,y riinate; whorls 
five, very convex, sutures profoundly impressed, very obli(iuely striate, the 
last whorl as(ending at the aperture; sjiiix' cylindrical, obtuse to the apex; 
aiierture very small, ringent, oiu' fourth the total lengfb of the shell, fuii'n- 
ished with seven une(|ual teeth (three very small jiariotals, the middle one 
largest, one largi* eolumellar lamelliforin tooth, three large lamelliform 
palatals) ; jieristome lightly expanded, margins apiiroaching, joined by a thin 
callus. Length 2.5, diameter 1 mm. Ilab., East Wallaby Island, Houtman’s 
Abrolhos (IValker). The teetli of this species are very characteristic, and 
block ii|) the aperture to a considerable extent. The three parietal are'mfaeh 
smaller than the rest, and situated close together, the central one being the 
largest. That on the columella is large, lamdliform, and prominent. The 
central palatal tooth is narrow, long, and extends inwards; those on each side 
of it are shorter, but a trille more ])rominent perhaps. P. M acdonnetli. 
Brazier, from Kitzroy Island, N.E. Australia, is a little shortei- than this 
species and has more feeble armature in (he .aperture.” Pilsbry added: “Mr. 
B. B. Woodward, who ha.s kindly examined the ty|ie specimen for me, states 
that the colunu'llar lamella ascends within. The spi'cies is thtn'idore related 
to the ])oIymorphic G. lariipi^ita. It differs by the unusually .small aperture 
(only one-fourth the total length, while in lurapinta it is at least one-t;hi:rd), 
and the narrower contour of the shell.” 
Australbinula complexa sp. nov. 
Plate 1. Fig. 7. 
Pilsbry ((Man. Conch. (Tryon), Ser. 11. , Vol. XXIV. (pt. 94), p. 170, 
July 18, 1917) proposed Gafttrocoptu larapinta deserti for a form of pupoid 
shell, picked out of series sent from Central Australia by Professor Tate as 
