FIJI-NEW ZEALAND EXPEDITION 203 
nished an excellent foundation on which many other things es- 
tablished themselves and grew in great quantities. Bryozoa, tube- 
dwelling worms, whole colonies of small corals, barnacles, hydroids 
and a lot of other things were thus brought to light. But the 
most important of all, from our standpoint, was the splendid 
series of red brachiopods, whole colonies of them, big and little, 
which often occupied the inner or concave surfaces of these shells, 
in striking contrast to the ivory white background on which they 
grew. They were the largest living brachiopods I have ever seen 
and were in such numbers that we have a sufficient stock to use 
for laboratory purposes in our regular course in zodlogy. 
The Pecten itself formed an interesting series in all stages of 
growth from about one-quarter to five inches in diameter. The 
younger specimens were oblong instead of orbicular in form, their 
length being in the direction of the radiating furrows, and they 
had more conspicuous wings. 
Another large lamellibranch conspicuous in several hauls of the 
trawl was a handsome Pinna. These came up in quantities but 
were thin and fragile and most of them were broken, even when 
containing the live animal. The shell was about twelve inches 
long with a maximum width of five and one-half to six inches. 
The surface was very dark with a purplish tinge and, where the 
epitheca was removed, beautifully iridescent, quite as pearly as 
an abalone shell and showing the same varying tints. The surface 
was longitudinally corrugated and on the ridges were series of 
sharply lunate projections or ridges with their convex sides direct- 
ed proximally. Inside, the shell was pearly on the proximal parts 
and dull brown and purplish distally, with a number of irregular 
corrigations and nodules. Many of these shells were overgrown 
with barnacles, bryozoans and worm-tubes. On the distal parts 
the lunate projections were extended into short tubes, expanded 
at their ends and incomplete on the side nearest the end of the 
shell. The muscle scars, probably of the great adductor, were 
very long and the muscles much expanded to form an extensive 
basis of attachment. A large, siphon-like tube projected back- 
ward from the visceral mass. 
This Pinna produces pearls, and a number of these were pre- 
sented to me by one of the crew on the Cowan. They were all 
small, almost black, and probably not of very great value. 
Small edible oysters (Ostrea) were abundant on the rocky shores 
of Rakino Island and elsewhere in New Zealand. I understand 
