other kinds of Turritellae are
found in New Zealand, all smaller, but similar to the above.

~TRIVIA AUSTRALIS~ (Plate VII.).--Fig. 29 is the New Zealand Cowry shell.
It is less than 1/2 inch in length, and is white, with one or more
flesh-coloured spots. It is found in the Northern part of Auckland
Province and in Australia.

~CYLICHNA STRIATA~ (Plate VII.).--Fig. 30 is a small, very narrow, smooth
white shell. It is found in Auckland.

~HAMINEA ZELANDIAE~ (Plate VII.).--Fig. 31 is an exceedingly thin, horny,
white or grey shell. It is sometimes called the sea snail, and is found
on the marine grass in harbours, as well as in the open sea. Stray ones
may be found in mud or sand.

~BULLA QUOYI~ (Plate VII.).--Fig. 32 is a smooth, greenish shell, an inch
and a-half long. It is sometimes marbled with purplish-grey, or with
white dots. This shell is found in Auckland and Australia. The Maori
name is Pupu wharoa.

~BARNEA SIMILIS~ (Plate VIII.).--Fig. 1 is a white rock borer, up to two
and a-half inches long. It is found all over the North Island, and at
Waikowaiti, in the South Island.

~PHOLADIDEA TRIDENS~ (Plate VIII.).--Fig. 2 is also a white rock borer,
found up to nearly two inches in length. It seems particularly fond of
the soft sandstone in the Auckland Harbour.

~PANOPEA ZELANDICA~ (Plate VIII.).--Fig. 3 is a widely-gaping white shell,
upwards of four inches long. It is common in the North Island, but rare
in the South. It lives a considerable distance below the surface of the
sand in the open sea or on exposed beaches. One, caught in situ, by Mr.
C. Spencer at Cheltenham Beach (Auckland) was about eighteen inches
below the surface of the sand at about half-tide mark. One species of
the Panopea family, which is found in South Africa, lives at a depth of
several feet. All bivalves that live in the sand have shells which gape
more or less, apparently to enable them to push their syphons through
the sand to the water. The deeper in the sand the shellfish lives, the
longer and stronger the syphon must be. The Panopea burrows deeper than
any other of our shellfish, and therefore requires the largest gape. As
mentioned on page 12, bivalves do not leave their beds to feed, but push
the syphon through the sand to the water and draw the water down one
syphon and eject it through the other, absorbing the animal and
vegetable matter as it passes through the mollusc's stomach. The Maori
name is Hohehohe, which is also