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Updated: September 13, 2024


The explanation of this complete separation of the South-eastern marine fauna of Australia from that of the North-eastern or Indo-Pacific portion, may be explained by reference to the distribution of currents along the Australian shores.

Of Volutes, V. turneri lives on coral blocks at Port Essington, and V. undulata partially buried in sandbanks at Port Dalrymple. Conus maculosus is an inhabitant of the last-named locality. The Mitras found in the Littoral zone were all on the north-east coast, and well-known Indo-Pacific forms. A new Murex was taken on mud at Port Curtis.

A very curious fact noted during the expedition was the presence of a Unio living within the influence of salt water, in the River Brisbane. These belong to the Indo-Pacific province. Some are found on the mangroves themselves.

Of convolute shells the littoral species gathered were all Indo-Pacific and inhabitants of mostly the coral-reef region, such as Cypraea arabica, annulus, isabella, errones and oryza, Conus magus, arenatus, achatinus, etc., Oliva cruentata, tremulina and ericinus, those of the last-named genus often living in sand. Bulla cylindrica occurred in sandy pools on the reef at Claremont Isles.

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