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[[ Hypsophrys Agassiz 1859 ZBK ]]
Examination of the holotypes of Neetroplus nematopus ZBK and Hypsophrys nicaraguensis show that these species share a number of unique derived features (Figure 1-2; see Table 1 for counts and measurements). These features include possession of a single supraneural (Figure 3), a strongly rounded snout profile, and a small and slightly subterminal mouth. On the basis of these shared apomorphic features, and a lack of autapomorphic features attributable to either genus, we place Neetroplus Guenther 1867 ZBK in synonymy with Hypsophrys Agassiz 1859 ZBK . Therefore, Neetroplus nematopus Guenther 1867 ZBK is henceforth Hypsophrys nematopus ( Guenther 1867) .