32 
HAMINEA ZELANDIAE (Plate VII.).—Fig. 31 is an exceed- 
ingly 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 QUOY!I (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 ex- 
posed beaches. One, caught in situ, by Mr. C. Spencer at Chelten- 
ham Beach (Auckland) was about eighteen inches below the sur- 
face 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 molluse’s stomach. The Maori 
name is Hohehohe, which is also given to the Tellina family, on 
Plate VIII. 
COCHLODESMA ANGASI (Plate VIII.).—Fig. 4 (late 
Anatina angasi) is a very white, almost transparent, thin shell, 
three and a-half inches long. One valve is nearly flat, and the 
