Tachycnemis Fitzinger, 1843, Syst. Rept.: 31. Type species: Eucnemis seychellensis Duméril and Bibron, 1841, by original designation.
Megalixalus Günther, 1869 "1868", Proc. Zool. Soc. London, 1868: 485. Type species: Megalixalus infrarufus Günther, 1869, by original designation. Synonymy by Dubois, 1981, Monit. Zool. Ital., N.S., Suppl., 15: 265.
Megalixcelus — Palacky, 1898, Verh. Zool. Bot. Ges. Wien, 48: 378. Incorrect subsequent spelling of Megalixalus Günther, 1869.
Seychelles Island Frogs (Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 70).
Seychelles Tree Frogs (Ananjeva, Borkin, Darevsky, and Orlov, 1988, Dict. Amph. Rept. Five Languages: 76).
Seychelles Is., Indian Ocean.
Dubois, 1981, Monit. Zool. Ital., N.S., Suppl., 15: 265, noted that Tachycnemis Fitzinger, 1843, has priority over Megalixalus Günther, 1869 "1868". Considered to form the sister taxon of Heterixalus by Vences, Kosuch, Glaw, Böhme, and Veith, 2003, J. Zool. Syst. Evol. Res., 41: 205-213. See comments under Heterixalus and Hyperoliidae for more information on phylogenetics.
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