ior is brown, or bluish-black, with fine
grooves or lines round it. The interior is violet, and the extreme
length about 3/4 inch.

~LITORINA MAURITIANA~ (Plate VII.).--Fig. 6 is a very common shell in the
North Island, where it is found on rocks in the open sea, or in harbours
up to, and even above, high water mark. The shell is under half an inch
long, and usually not more than a quarter of an inch. The colour outside
is bluish-white, with a broad spiral band of dark blue. The interior is
violet.

~DAPHNELLA LYMNEIFORMIS~ (Plate VII.).--Fig. 10 is a very thin, whitish
shell, with irregular brown markings, and is often dredged up in the
vicinity of Auckland. Its extreme length appears to be 1-1/4 inches.

~SURCULA NOVAE-ZELANDIAE~ (Plate VII.).--Figs. 11 and 12 (late Drillia
zelandica) is a pale rose-coloured shell, nearly 1-1/2 inches in length.
It belongs to the Pleurotoma family, any of which can easily be
identified by the notch in the outer lip, as shown near the centre of
the figure. All of this family live below low water mark, and are
obtained by dredging. It is found in both Islands.

~SURCULA CHEESEMANI~ (Plate VII.)--Figs. 15 and 16 (late Pleurotoma) is a
shell varying from pale pink to brown in colour. Interior rose or
purple. The spire end is usually smooth. It is found in Auckland, and is
about one inch in length.

~SOLIDULA ALBA~ (Plate VII.).--Fig. 14 (late Buccinulus kirki) is a
whitish shell, found in the North of Auckland. Its extreme length is 3/4
inch.

~POTAMIDES SUB-CARINATUS~ (Plate VII.).--Fig. 13 (late Cerithidea
subcarinata) is a dull black shell seldom over half an inch long. The
colour is usually concealed by the reddish-brown epidermis. The interior
is dark purple.

~POTAMIDES BICARINATUS~ (Plate VII.).--Fig. 19 (late Cerithidea
bicarinatus) is a reddish-brown or purple shell, covered with a blue or
brown epidermis. The interior is purple. It is found in the North Island
in large numbers on banks of sand mixed with mud near high water mark.
Its extreme length is one inch.

~SCALARIA ZELEBORI~ (Plate VII.).--Fig. 17 is the New Zealand
representative of the Wentletrap family. It is a pure white shell,
sometimes over an inch in length. The numerous ribs across the whorls
are very prominent, and look like the steps of a ladder, whence it
derives its name. It lives in the ocean below low water mark, and I have
dredged it up with the Ethalia zelandica (Plate VI., Fig. 7). The Maori
na