Curinsi or Acobu, is an unclassified and presumably extinct language of the Maranhão region of Northeastern Brazil.
[1] Kaufman (1994) said that 'only Greenberg dares to classify this language', due to the lack of data on it.
This is presumably the Gamela language of Viana[2] for which 19 words are recorded in Nimuendajú (1937:68).
Below are other extinct varieties, many of which have no data, that may have been related to Gamela.
[1] Loukotka (1968) gives three words in Gamela:[1] Gamella of Viana words recorded by Nimuendajú (1937:68) from his informant Maria Cafuza in Viana, Maranhão:[3]