Sternarchorhynchus cf. curvirostris .

Brazil: Amazonas: INPA 4834, 1, 189, Rio Uatumã, Balbina near of dam, J. Zuanon, et al., 24 Oct 1987. INPA 11523, 1, 291, Paraná Afoia, 10 Km west of the community ‘mouth of Mamirauá ’, Alvarães, Rio Solimões, 03°2’S 64°51’W. INPA 11331, 1, 137, Rio Negro, Lago do Prato, Novo Airão, M. Garcia, 17 Mar 1991. INPA 19992, 1, 222, Rio Amazonas, Paraná do Tapará, C. Cox-Fernandes, 03 Nov 1992. Pará: INPA 3931, 2, 170-184, Rio Xingu, Cachoeira de Kaituká, L. R. Py-Daniel & J. Zuanon, 09 Oct 1990. INPA 3934, 3, 99-130, Rio Xingu, Cachoeira de Kaituká, L. R. Py-Daniel & J. Zuanon, 09 Oct 1990.