141 
161 - 166, pi. 7, and with those of Hutton on P. hovinus , Trans. 
N. Z. Institute, 1881, Yol. xiv., p. 152, pi. 3, figs. d. o. 
var. cuniculinsul/E, Cox , 1872. 
Illustration . Cox, P.Z.S., 1872. pi. 4, fig. 3. 
Description. Op. cit., p. 19 ; Brazier, Aust. Mus. Mem. 2, p. 27. 
Type . The Cox Collection 
Hah. Rabbit Island. 
A local race from a satellite isle, differing in being rather smaller 
thinner and narrower than the type ; the rimation upon which the 
author lays stress, appears of slight importance since all Placostyli 
possess or lack it indifferently. 
var. rtheridgei, Brazier , 1889. 
Illustration. Brazier, Aust. Mus. Mem. 2, pi. 5, figs. 1, 2, 7, 8 
(reversed). 
Type. Australian Museum. 
A large thin elongate form, exhibiting transverse malleated 
furrows, on the last whorl the epidermis is nearly black, the bright 
cherry red of the typical aperture has almost disappeared, only 
the columellar plication retaining a trace, the nacreous lining of 
the interior and the callus on the body-whorl are tinged a 
greenish-blue. Length 65, breadth 27, length of aperture 30, 
breadth of aperture 20 mill. 
Ilab. Under the wall of Mount Ledgbird. 
Several recent specimens approach the interesting fossil variety 
solidus which is exhaustively described by Mr. Etheridge in an 
accompanying paper. All the dominant forms of Lord Howe 
possess that instability of character which seems inherent in 
insular faunae. 
14. Simpulosis (?) mastersi, Brazier , 1872. 
(Plate xxi., fig. 9.) 
Description. Brazier, P.Z.S., 1872, p. 619; Pfr., Mon. Hel. Yiv., 
Yol. vii., p. 29 ; Brazier, Aust. Mus. Mem. 2, p. 27. 
Type . Australian Museum. 
Ilab. A gully on the North Ridge, among dead leaves ; rare. 
The animal of the single specimen procured by the expedition 
is so shrunk by the action of the alcohol in which it is preserved, 
that 1 am unable, even with the aid of the microscope, to deter- 
mine any details of its external anatomy, and I do not feel justified 
in dissecting the solitary example possessed by the Museum. 
Except by adding a figure of the shell I cannot therefore increase 
our knowledge of this obscure form. 
B— June, 1891. 
