uatua or Kahitua.

~CHIONE COSTATA~ (Plate VIII.).--Fig 26 (late Venus costata) is a strong,
solid white shell, with thick radiating ribs. The only live ones I have
found were either washed up on ocean beaches, or inside schnappers. This
fish appears very fond of the Chione costata, and swallows it without
attempting to crack the shell. It attains a length of about two inches,
and the Maoris call it Kaikai karoro, which name is also given to the
Struthiolaria papulosa (Plate IV.) and the Mactra aequilatera (Plate
VIII.).

~CHIONE STUTCHBURYI~ (Plate VIII.).--Fig. 27 (late Venus stutchburyii) is
the common round cockle, found in both North and South Islands. Although
when found on clean sandy banks it is usually reddish-brown on the
outside and bluish-white inside, it varies in colour if the sand
contains an appreciable quantity of mud. It is called Anga or Huai or
Pipi by the Maoris, and attains a length of two inches.

~CHIONE OBLONGA~ (Plate VIII.).--Fig. 28 (late Venus oblonga) is a brown
or brownish-white shell, with a white interior, and is rather larger and
more solid than the Stutchburyii, besides being more oval.

~ANAITIS YATEI~ (Plate VIII.).--Fig. 29 (late Chione yatei) is a pale
yellowish or brown shell, with a purple or slate-coloured patch round
the hinge. The ridges on the outside, especially on the young shells,
are thin and very high. As the shell attains its full size these ridges
wear down. The old shells become thick and heavy, and are over two
inches in width. It is found on exposed or ocean beaches in the North
Island, and rarely in the South. The Maoris call it Pukauri.

~HALIOTIS IRIS~ (Plate IX.).--Fig. 1 is the Pawa or Papa of the Maori, and
the Mutton fish of the colonist. The outside is brown, and the inside a
dark metallic blue and green, with an iridescent play of yellow and
other colours. It is found on rocks in the open sea or on exposed
beaches, and is six or seven inches wide.

~HALIOTIS RUGOSO-PLICATA~ (Plate IX.).--Fig. 2 is about half the size of
the Haliotis iris, and is known to the Maoris as the Pawa-rore or
Koro-riwha. The outside is pinkish-brown, the interior being pale and
highly iridescent. It is usually found with the Haliotis iris, but is
not so common.

Another Haliotis, named the Virginea, is much smaller and thinner than
either of the above. The interior of this is like that of the Haliotis
rugoso-plicata, but the exterior is variegated, and dotted and splashed
w