Rhamphichthys rostratus ( Linnaeus, 1766 )

Ferraris, Carl J., Jr, Santana, Carlos David de & Vari, Richard P., 2017, Checklist of Gymnotiformes (Osteichthyes: Ostariophysi) and catalogue of primary types, Neotropical Ichthyology 15 (1), No. e 160067, pp. 1-8 : 1-8

Rhamphichthys rostratus ( Linnaeus, 1766)

Gymnotus rostratus Linnaeus, 1766: 428 . Type locality:America. Syntypes: On Seba (1758: pl. 32, fig. 5) and Gronovius (1763: 41).

Gymnotus longirostratus La Cepède, 1800: 145 , 178. Type locality: l’Amérique méridionale. Syntypes: On several literature sources, including account of Gymnotus rostratus in Gmelin (1789), Seba (1758: pl. 32, fig. 5), Gronovius (1763: 41) and others.

Rhamphichthys Blochii Kaup, 1856: 133 , fig. 9. Type locality: America. Syntypes: On specimen described and illustrated in Bloch, Schneider (1801: 522, pl. 106) as Gymnonotus rostratus , then preserved in Berlin Museum; 27.8 in. TL, and Seba (1758: pl. 32, fig. 5).

Rhamphichthys Reinhardti Kaup, 1856: 132 , fig. 8. Type locality: unknown. Holotype: MNHN 0000-3956, 28.8 in. TL.

Rhamphichthys Schneideri Kaup, 1856: 136 , fig. 11. Type locality: Cayenne. Syntypes: (2, one 2.57 in TL) at MNHN, possibly MNHN 0000-3957.

Rhamphichthys Schomburgki Kaup, 1856: 135 , fig. 10. Type locality: Rivers of Demerara, British Guiana. Syntypes: (at least 3, all from Schomburgk collections), Berlin Museum, Darmstadt, and MNHN 0000-3958.

Remarks: Synonymy tentative. Günther (1870: 5) would serve as first reviser if R. blochii was found to be a valid species distinct from R. rostratus and R. longirostratus , and R. reinhardti its (junior) synonym. Eigenmann, Eigenmann (1891: 62) later took the opposite approach and treated R. reinhardti as valid over R. blochii . Steindachner (1868: 258) would serve as first reviser if R. schomburgki was found to be a valid species distinct from R. rostratus and R. longirostratus , and R. schneideri its (junior) synonym (status of R. reinhardti and R. blochii is unresolved).

Distribution: Amazon, Essequibo and coastal rivers of Guianas ( Carvalho, Albert, 2015).

STEATOGENYS Boulenger, 1898 (3 species)

Steatogenys Boulenger, 1898: 428 . Type species: Rhamphichthys elegans Steindachner, 1880 . Type by monotypy. Gender: feminine.

Tateichthys La Monte, 1929: 1 . Type species: Tateichthys duidae La Monte, 1929 . Type by monotypy. Gender: masculine.

Revision: Schwassmann (1984).