Pfeifer, M.A., Andrick, U.R., Frey, W. & Settele, J. 2000. On the ethology and ecology of a small and isolated population of the Dusky Large Blue Butterfly Glaucopsyche (Maculinea) nausithous (Bergsträsser, 1779) (Lep., Lycaenidae). Nota Lepidopterologica, 23: 147–172. Rebel, H. 1910. Fr. Berges’ Schmetterlingsbuch. . . (9th edition). 507, 114 pp., 53 pls. Schweitzerbartsche Verlagsbuchhandlung, Stuttgart. Scudder, S.G. 1872. A systematic revision of some of the American butterflies; with brief notes on these known to occur in Essex County, Mass. Fourth Annual Report of the Trustees of the Peabody Academy of Science for the year 1871, 24–83. Seitz, A. (Ed.). 1907–1909. Die palaearktischen Tagfalter. Die Gross-Schmetterling der Erde, 1: 1–379. Seitz, A. (Ed.). 1929–1932. Die palaearktischen Tagfalter. Supplement. Die Gross- Schmetterling der Erde, 1(Suppl.): 1–399. Settele, J., Feldmann, R. & Reinhardt, R. 2000. Die Tagfalter Deutschlands. 452 pp. Ulmer, Stuttgart. Settele, J., Steiner, R., Reinhardt, R., Feldmann, R. & Hermann, G. 2009. Schmetterlinge – Die Tagfalter Deutschlands (2. Aufl.). 256 pp. Verlag Eugen Ulmer, Stuttgart. Spuler, A. 1901–1908. Die Schmetterlinge Europas. Teil 1. 127, 385 pp. Schweitzerbartsche Verlagbuchhandlung, Stuttgart. Tinbergen, N., Meeuse, B.J.D., Boeerema, L.K. & Varossieu, W.W. 1942. Die Balz de Samtfalters, Eumensis (=Satyrus) semele (L.). Zeitschrift fu ¨r Tierpsychologie, 5: 182–226. van der Linde, K., Bächli, G., Toda, M.J., Zhang, W.-X., Hu, Y.-G. & Spicer, G.S. 2007. Drosophila Fallén, 1823 (Insecta, Diptera): proposed conservation of usage. Bulletin of Zoological Nomenclature, 64: 238–242. Comments on the proposed conservation of usage of Testudo gigantea Schweigger, 1812 (currently Geochelone (Aldabrachelys) gigantea; Reptilia, Testudines) (Case 3463; see BZN 66: 34–50, 80–87, 169–186, 274–290, 352–357; 67: 71–90, 170–178, 246–254) (1) J. Frazier Smithsonian Conservation Biology Institute, 1500 Remount Road, Front Royal, VA 22630, U.S.A. (e-mail: kurma@shentel.net) 1. Summary Case 3463 promotes nomenclatural stability and universality through conservation of the oldest, most frequently cited, most widely recognised name for the Aldabra tortoise, Testudo gigantea Schweigger, 1812, with a neotype fixed to Aldabra Atoll. It opposes nomenclatural confusion sustained by inconsistent, contradictory nomen- clatural proposals causing incessant debates, and proposes the suppression of Testudo dussumieri Gray, 1831, a name resurrected after more than a century of disuse and tied to a lectotype of uncertain provenance and taxonomy, unsuitable as the name-bearing type for the Aldabra tortoise. Case 3463 does not pretend to resolve taxonomic questions or bear on generic names, other than to make Aldabrachelys Loveridge & Williams, 1957 – established explicitly for the Aldabra tortoise – available for this taxon. Case 3463 does not debate the veracity of the holotype of T. gigantea, disqualify certain professions from nomenclatural discussions, or restrict nomenclatural issues to the exclusive domain of an elite group. It seeks multidisci- plinary relevance and widespread valuing of the Commission and its Code, especially in collaboration with specialists in conservation biology. 319 Bulletin of Zoological Nomenclature 67(4) December 2010