The St Matthias languages are a pair of
Oceanic languages
The approximately 450 Oceanic languages are a branch of the Austronesian languages. The area occupied by speakers of these languages includes Polynesia, as well as much of Melanesia and Micronesia. Though covering a vast area, Oceanic languages ...
spoken on the
St. Matthias Islands.
They are a "residual" group of Oceanic languages.
References
Languages of Papua New Guinea
Oceanic languages
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