On Wed, 16 Jul 2003 08:32:02 +0200, Rob Nierse <[log in to unmask]> wrote:

>My understanding is that they do occur, but in a very small number of
>languages - possibly only a single language family, New Guinea perhaps,
>but my memory is not quite precise enough. I forget how they're
>represented in IPA, but I think there is a way.
>I remember to have read that a South American language also has a
linguolabial. Unfortunatley, I 've forgotten the source and the language .....

I've seen references to one SA language, I think it was Umotina, but I've
never seen any solid data regarding this sound.

In Vanuatu (former New Hebrides) linguolabials occur in a number of
Austronesian languages spoken on the islands of Spiritu Santo and Malekua
(if memory serves), where I believe they developed from either a dental or
labial series - in any case they are now cognate with a dental series is
nearby languages.

Big Nambas (V'enen Taut) is the best documented language, with linguolabial
stop, fricative, and nasal.

A linguolabial trill is easily produced, but no language has been documented
to use it as a phoneme.