Tyttobrycon hamatus Géry, 1973

Stud. neotr. Fauna 8: 129-134, fig. 31-35, tabl. 11.

Holotype:
MHNG 2172.30 (m, 15.3, mm LS). Pérou: upper Amazon basin, Loreto District of Peru, in some tributary of the Maranon, not far from Iquitos (precise locality unknow), X. 1965; lg Ross Socolof.

Paratypes:
MHNG 2172.37 (5, 14,1-16,9 mm LS) Same data [ = Pérou: upper Amazon basin, Loreto District of Peru, in some tributary of the Maranon, not far from Iquitos (precise locality unknow), X. 1965; lg Ross Socolof].
MHNG 2172.39 (1, C&S) Same data [ = Pérou: upper Amazon basin, Loreto District of Peru, in some tributary of the Maranon, not far from Iquitos (precise locality unknow); X. 1965; lg Ross Socolof].
MHNG 2172.60 (1,f,16,5 mm LS) . Probably in the vincinity of Iquitos, IX. 1965; lg I. J. H. Isbrucker.

Remarques: CJG 677; MHNG 2172.37 et 2172.39: 6 des10 paratypes du lot,1 ANSP (2. X.1978), 2 MNHN (17.VIII.1980) .