94 Bulletin of Zoological Nomenclature 50(1) March 1993 OPINION 1716 Hyla chrysoscelis Cope, 1880 (Amphibia, Anura): specific name conserved by the designation of a neotype Ruling (1) Under the plenary powers all previous fixations of type specimen for the nominal species Hyla chrysoscelis Cope, 1880 are hereby set aside and specimen no. 37293 in the Texas Natural History Collection (University of Texas at Austin) is hereby designated as the neotype. (2) The following specific names are hereby placed on the Official List of Specific Names in Zoology: (a) chrysoscelis Cope, 1 880, as published in the trinomen Hyla femoralis chryso-scelis and as defined by the neotype designated in { 1 ) above; (b) versicolor Le Conte, 1825, as published in the binomen Hyla versicolor and as defined by the neotype (specimen no. 84483 in the American Museum of Natural History, New York, of which the tetraploid karyotype is no. AMNH K207) designated by Smith, Fitzgerald & Guillette (1992). History of Case 2366 An application to set aside the tetraploid holotype oi Hyla chrysoscelis Cope, 1880 and to designate a diploid neotype was received from Profs Hobart M. Smith, Kevin T. Fitzgerald and Louis J. Guillette (then of the University of Colorado, Boulder. Colorado. U.S.A.) on 18 November 1980. After correspondence the case was published in BZN 40: 165-166 (October 1983). Notice of the case was sent to appropriate journals. The subsequent history of the case was summarized by the applicants in BZN 49: 151-153 (June 1992). As stated in paras. 2 and 3 on p. 152, in March 1990 the Commission rejected the proposed authorship of Johnson (1961) for the name Hyla chrysoscelis, endorsed a previous vote (September 1985) which set aside the type status of the holotype of H. chrysoscelis Cope, 1880 (unfortunately a specimen of//. versicolor Le Conte, 1825), and accepted as neotype of chrysoscelis the holotype of//. versicolor sandersi Smith & Brown, 1947. However, the ploidy of this specimen (USNM 123978) was questioned. It proved technically not possible to determine the chromosome number, in eflfect rendering the specimen useless as the neotype. Accordingly, no Opinion was published at that stage. After unavoidable delays a diploid specimen was proposed (BZN 49: 1 52, paras. 3 and 4) as neotype of //. chrysoscelis Cope, 1 880. A neotype for the tetraploid //. versicolor Le Conte, 1825 was also designated; in March 1990 the Commission had voted to place the name of this species on the Official List. The proposal to accept the change of neotype for H. chrysoscelis was submitted for voting in September 1992 and the Commission's approval has allowed the completion of this long-running case. Decision of the Commission On 1 September 1992 the members of the Commission were invited to confirm the 1990 vote and accept the neotype for Hyla chryoscelis proposed on BZN 49: 152. At the close of the voting period on 1 December 1992 the votes were as follows:
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