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Venus Chilensis, d'Orbigny "Voyage" Pal. 8. Solecurtus hanetianus, d'Orbigny "Voyage" Pal. 9. Mactra auca, d'Orbigny "Voyage" Pal. 10. Oliva serena, d'Orbigny "Voyage" Pal. Of these twenty-four shells, all are extinct, except, according to Mr. Sowerby, the Artemis ponderosa, Mytilus Chiloensis, and probably the great Balanus.
Could we obtain a deep section of the bottom, we should find beds of Ostrea edulis and Cardium edule, then a layer of Zostera marina with fresh-water fish, and then a bed of Mytilus edulis.
The Acephala found living in the Littoral zone of the south-east Australian province were Cleidotherus chamoides, under rocks at low-water in Port Jackson; Mytilus erosus on the mud of zostera flats at Port Dalrymple, several species of Venus, Tapes, Cytherea in similar localities; Arca globata in the same habitat at Brisbane; Arca fuscata in reefs at Port Dalrymple; a new Tellina on mud at Port Phillip; another with Donax epidermia in sand at Broken Bay, and Clavagella australis on rocks at low-water, Port Jackson.
Kent, the assistant-surgeon, was so kind as to make for me some measurements with the barometer: he found many marine remains along the shores of the whole bay, at a height of about twenty feet; and from the hill of Sentinella behind Talcahuano, at the height of 160 feet, he collected numerous shells, packed together close beneath the surface in black earth, consisting of two species of Mytilus, two of Crepidula, one of Concholepas, of Fissurella, Venus, Mactra, Turbo, Monoceros, and the Balanus psittacus.
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