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zoop'hytes of every kind, which will probably long* remain unknown; 
for this country, lacking fresh water, cannot attract navigators. 
We brought thence, more than ten years ago, specimens of 
Vermetus, whose tubes are attached to shells. Voluta undulata 
occurs there as well as the large species for which the genus Cym- 
bium 1 was created, also Pinna maritima buried in the sand, 
which occurs in such numbers that it is necessary to wear shoes to 
avoid being cut by them. We collected there a completely black 
Pleurobranchus which we lost, and several species of bivalves. The 
borders of the salt lagoons are covered with Cerithium album. 
On Dirk Hartog Island, ten leagues distant, tuns occur in 
numbers, also sponges and fragments of corals, which shows that 
there are localities where these latter groAv, doubtless in small num- 
bers, for on these sandy coasts the temperature is low at nights and 
must be unfavourable to their reproduction. 
Riche and Peron have mentioned trees entirely fossilised, of 
which only the trunks remained. These productions ought to be 
studied anew in order to determine their origin, in the light of more 
recent knowledge. 
King George’s Sound . — This locality is rich in Molluscs. In the 
calm waters of Princess Royal Harbour, especially on the left, occur 
many varieties of Phasianella, a shell which was for a long time 
rare in collections. Bullas are there in hundreds, and at every step 
one crushes three or four species. Following the right bank, one 
meets with specimens of Trochus, many Aviculas fixed on the long 
leaves of fucus like the beads of a rosary, Fusus, Buccinums, 
Naticas, Neritas, Barnacles, etc. On the rocks on the two sides of 
the entrance of this harbour are enormous Limpets and long Acorn- 
barnacles which it is not always easy to obtain, because the sea 
breaks over them. In the crevices on the left, in the little rock-i 
basins, we discovered accumulations of the large Cerithium leve, 
very rare in collections. On these sluggish molluscs we found Hip- 
ponyx australis , formerly regarded as a Patella. Valves of Solen 
and of Solemia, perfectly Avhole, lie on the sandy shores. We 
could not obtain the animals of these latter, which are very similar 
to those found in the Mediterranean. By drawing a tangle along 
the bottom we captured small Phasianellas, which we also obtained 
with the dredge, as well as Stomatellas and Cryptostomas. But it 
was chiefly on Garden Island in the nests of terns and [gulls that we 
obtained these latter shells, of which the molluscs serve as food to 
the young bird. 
From the islands in the middle of the harbour Turbo cooki and 
Haliotis of a very large size were brought to us. The left bank of 
the Englishmen’s River abounds in Venus, on which we fed. They 
are buried in the mud, but, easy to obtain because they almost always 
1 Cymbium flammeum, Bolten. 
