Roemer, Hahn & Vergara 2010. Description of Dicrossus foirni sp. n. and Dicrossus warzeli sp. n. (Teleostei: Perciformes: Cichlidae), two new cichlid species from the Rio Negro and the Rio Tapajos, Amazon drainage, Brazil. Vertebrate Zoology, 60(2) 2010: 123-138