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Keywords from Image Description:
Arapaima agassizii. en up illustration of Sudis pirarucu from Spix and Agassiz perhaps of the same specimen that is the holotype for agassizii down osteological illustration supervised by Agassiz of holotype for agassizii Spix and Agassiz Selecta genera et species piscium quos in itinere per Brasiliam annos MDCCCXVII MDCCCXX jussu