152 
RECORDS OF THE AUSTRALIAN MUSEUM. 
and two above. On the inner whorls the lamellae grow less 
prominent and disappear. Between the lamellae the surface of 
the shell is microscopically spirally grooved. Aperture oblique, 
not descending, unfinished. A slight callus spreads in advance of 
the aperture on the previous whorl. Major diameter, 2*4, minor 
2*2; height 1*2 mm. 
The curiously tagged lamellae sufficiently distinguish this species 
from all co-generic forms. In systematic order its place is next 
to E. paradoxa , Cox. 
Log. — Two specimens were collected at Wollongong, New South 
Wales, by Mr. A. E. Lower. That figured has been presented 
by Dr. J. C. Cox. 
Endodonta norfolkensis, sp. nov . 
(PI. xxviii., figs. 4, 5, (3). 
Shell minute, depressed globose, perforate. Colour uniform 
tawny-olive. Whorls five, gradually increasing, rounded, separated 
by a deep suture. Sculpture — fine close longitudinal riblets cross 
the whole breadth of each whorl. Aperture perpendicular, lunate, 
outer lip sharp. Armature — two lamellae on the parietal wall, 
one median, curling within and projecting beyond the aperture, 
the other straight, posterior and deeper seated ; on the outer wall 
two lamellae are so situated as to divide with the parietals the 
height of the aperture into fourths; on the inner side of the 
columella is a short curved ridge ; the armature does not extend 
back into the shell for more than half a whorl, its rear aspect is 
shown in the accompanying dissection (fig. 5). Base rounded, 
umbilicus about a fifth of the shell’s diameter, exposing the previous 
volutions. Major diameter 1'44, minor 1'28; height 1 mm. 
The mouth armature will readily distinguish this species, which 
belongs to the subgenus Thaumatodon y Pilsbry, and is one of 
many links between the faunas of Norfolk Island and New 
Zealand. Allusion was made to this species by Brazier in describ- 
ing E. dispar from Tasmania.* 
The land shells known from Norfolk Island have been described 
by authors as follows: — Helix phillipii, Gray; H. campbellii , Gray; 
II. insculpta , Pfeifler; II. jlosculus, Cox; II. quintalce , Cox; H. 
exayitans , Cox; Carocalla stoddartii , Gray; Omplialotropis cerea , 
Pfeiffer; 0. albocarinata , Mousson; Palaina coxi ) H. Adams; 
Helicina pictella^ Pfeiffer; H. norfolkensis , Pfeiffer. Brazier has 
also recorded the introduction of the European Vallonia pulchella. j 
Log. — Collected by J. Brazier in 1865 on Norfolk Island, South 
Pacific, in a guava forest on a hill side. 
* Brazier — Proc. Zool. Soc., 1870, p. 661. 
f Brazier — Journ. Concli., 1879, p. 281. 
