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Acknowledgements — The authors thank Dr. Zoran Kuzmanovich (Davidson College, USA) for his contributing the etymology for P. fyodor. Dr. Kuzmanovich is a scholar of Nabokov's ethics, aesthetics, and metaphysics, and has been editing the journal Nabokov Studies since 1996. Thanks are also due to Eric Quinter (American Museum of Natural History) for providing access to certain pertinent literature. REFERENCES Bálint, Zs. (1999): Annotated list of type specimens of Polyommatus sensu Eliot (Lepidoptera, Lycaenidae) of the Natural History Museum. — Neue ent. Nachr. (Marktleuthen) 46: 1-89 pp, 71 figs, 2 tabls. Boyd, B. and Pyle, M. R. (eds) (2000): Nabokov's butterflies. —Allen Lane, The Penguin Press, 783 pp, 31 pis. Forster, W. (1936): Beiträg zur Systematik des Tribus Lycaenini unter besonderer Berücksichtigung der argyrognomon- und der argus-Gruppe. — Mitt. manch, ent. Ges. (München) 26: 41-150, pis 3-15. Korshunov, J. P. and Gorbunov, P. J. (1995): [Butterflies of the Asian part of Russia]. — Izdateljstvo Uraljskovo Gosudarstyvennogo Universiteta, Ekaterinburg, 22 pp, figs [in Russian]. Lane, C. P and Weiler, S. J. (1994): A review of Lycaeides Hübner and Karner Blue Butterfly Taxonomy. — In: Andow, D. A., Baker, R. J. and Lane, C. P. (eds): Karner Blue Butterfly: A Symbol of Vanishing Landscape. Minnesota Agricultural Experiment Station, pp. 5-21. Lukhtanov, V. and Lukhtanov, A. (1994): Die Tagfalter Nordwestasiens. Herbipoliana, Band 3 — aktleuthen, Herausgegeber: Dr. Ulf Eitschberger, 440 pp, 56 pis, 400 figs. Nabokov, V. (1944a): The nearctic forms of Lycaeides Hüb. (Lycaenidae, Lepidoptera). — Psyche, Camb. 50: 87-99. Nabokov, V. (1944e): Notes on the morphology of the genus Lycaeides (Lycaenidae, Lepidoptera). — Psyche, Camb. 51: 104-138, pi 5, 2 figs. Nabokov, V. (1945): Notes on Neotropical Plebejinae (Lycaenidae, Lepidoptera). — Psyche.Camb. 52: 1-61, 8 pis, 1 fig. Nabokov, V. (1949): The nearctic members of the genus Lycaeides Hübner (Lycaenidae, Lepidoptera). — Bull. Harvard Mus. Comp. Zool. 101: 479-541, 9 pis. (Received: 10th May, 2000) Authors' addresses: Zsolt BÁLINT Department of Zoology Hungarian Natural History Museum H-1088 Budapest, Baross utca 13 HUNGARY e-mail: balint@zoo.zoo.nhmus.hu Yu-Feng HSU Department of Biology National Taiwan Normal University 88, Section 4, Tingchou Road, Taipei, 116 Taiwan, R.O.C. TAIWAN e-mail: t430 18@mail.cc.ntnu.edu.tw Kurt JOHNSON The Ethical Culture Society 53 Prospect Park West, Brooklyn New York 11215-2629 U.S.A. e-mail: JohnsonK@Coudert.com