Pontoporia blainvillei (Gervais and d'Orbigny, 1844) . Bull. Sci. Soc. Philom. Paris, 1844:39.

TYPE LOCALITY: Uruguay, "qui a été pris à Montevideo " = mouth of the Rio de La Plata near Montevideo .

DISTRIBUTION: Brazil to Argentina: coastal waters from Doce River, Regencia, Espirito Santo to Peninsula Valdez.

STATUS: CITES - Appendix II; IUCN - Insufficiently known.

SYNONYMS: tenuirostris .

COMMENTS: Reviewed by Brownell (1989).